Pumpkin Bars with Brown Sugar Frosting

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Author: Emily Frost
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Is there anything better than the smell of warm spices filling your kitchen on a crisp fall day? I wait all year for this moment – when I can finally pull out my favorite pumpkin recipes and get baking. These pumpkin bars with brown sugar frosting have been a family tradition since my kids were little, and they’re the first thing they ask for when the leaves start to change.

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The secret to these bars is that magical brown sugar frosting. While pumpkin puree gives them that earthy sweetness we all love, it’s the rich, caramel-like frosting that makes them truly special. I learned from my mom that brown sugar (packed tight, of course) makes all the difference. It adds this deep, molasses-y flavor that regular powdered sugar frosting just can’t match.

What I love most is how these pumpkin bars with brown sugar come together so easily. One bowl for the batter, one for the frosting, and you’ve got a dessert that tastes like you spent hours in the kitchen. The warm cinnamon and nutmeg make your whole house smell like autumn, and the texture? Perfectly moist without being heavy. Trust me, one bite and you’ll understand why this recipe gets made at least five times every fall in our house!

Table of Contents

Why You’ll Love These Pumpkin Bars with Brown Sugar

Oh, where do I even start? These pumpkin bars have been my go-to fall dessert for years, and here’s why you’ll adore them too:

  • Easy as pie (but way simpler!): One bowl for the batter, one for the frosting – that’s it! No fancy techniques or special equipment needed.
  • That brown sugar frosting: It’s the star of the show, with its rich, caramel-like flavor that makes these bars taste like a cozy fall hug.
  • Perfectly moist texture: Thanks to real pumpkin puree, these bars stay tender for days without getting soggy or dense.
  • Warm spice magic: Cinnamon, nutmeg, and cloves give that classic pumpkin spice flavor without being overpowering.
  • Crowd-pleaser guaranteed: I’ve served these at everything from PTA meetings to Thanksgiving dinners, and they always disappear first!

Honestly, the hardest part is waiting for them to cool before frosting – but that first bite is always worth it!

Ingredients for Pumpkin Bars with Brown Sugar

Let’s talk ingredients – because using the right stuff makes all the difference in these pumpkin bars. I’ve made this recipe enough times to know exactly what works (and what doesn’t). Here’s everything you’ll need:

  • 1 1/2 cups all-purpose flour (spooned and leveled – no packing the measuring cup!)
  • 1 teaspoon baking soda (make sure yours is fresh – it loses potency over time)
  • 1 teaspoon ground cinnamon (I prefer Ceylon for its mild sweetness)
  • 1/2 teaspoon ground nutmeg (freshly grated if you’re feeling fancy)
  • 1/4 teaspoon ground cloves (just a touch – they’re powerful!)
  • 1/2 teaspoon salt (I use kosher salt for better distribution)
  • 1 1/2 cups granulated sugar
  • 1/2 cup vegetable oil (canola works great too)
  • 2 large eggs (room temperature makes them blend better)
  • 1 (15-ounce) can pumpkin puree (NOT pumpkin pie filling – read that label carefully!)
  • 1/2 cup chopped walnuts or pecans (optional, but adds great texture)

For That Amazing Brown Sugar Frosting:

  • 8 tablespoons (1 stick) unsalted butter, softened (real butter only – no substitutes!)
  • 4 ounces cream cheese, softened (full-fat gives the best texture)
  • 3 cups powdered sugar (sifted if it’s lumpy)
  • 1/2 cup packed light brown sugar (pack it tight in the measuring cup)
  • 1 teaspoon vanilla extract (pure vanilla makes a difference)
  • 2-4 tablespoons milk or cream (start with less – you can always add more)

See that “packed” note on the brown sugar? That’s crucial – you want it dense for maximum flavor. And don’t skip sifting the powdered sugar unless you enjoy lumpy frosting (spoiler: no one does). Now let’s get baking!

How to Make Pumpkin Bars with Brown Sugar

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Alright, let’s get to the fun part! Making these pumpkin bars is seriously easy – I promise. Just follow these simple steps, and you’ll have a pan of autumn magic in no time. The key is taking it step by step and not rushing the process (though I know how tempting it is to dig in right away!).

Preparing the Pumpkin Bars Batter

First things first – preheat that oven to 350°F (175°C). While it’s heating up, grab your trusty 9×13 inch baking pan and give it a good grease and flour treatment. Nothing’s worse than bars that stick!

Now, let’s make the batter:

  1. Whisk the dry ingredients: In a large bowl, whisk together your flour, baking soda, cinnamon, nutmeg, cloves, and salt. I like to give it about 30 seconds of vigorous whisking – this helps distribute the baking soda evenly so you don’t get any bitter bites.
  2. Mix the wet ingredients: In another bowl (yes, you’ll have dishes to wash – worth it!), whisk together the sugar, oil, and eggs until they’re smooth and well combined. The mixture should look pale yellow and slightly thickened.
  3. Add the pumpkin: Stir in that glorious pumpkin puree until it’s fully incorporated. The batter will turn that beautiful orange color that just screams fall!
  4. Combine carefully: Now, gradually add your dry ingredients to the wet ingredients, mixing just until combined. I mean it when I say “just until” – a few flour streaks are fine! Overmixing makes tough bars, and we want these tender.
  5. Fold in nuts: If you’re using walnuts or pecans, now’s the time to gently fold them in.

Baking and Cooling Tips

Pour that gorgeous batter into your prepared pan and spread it evenly with a spatula. Pop it in the oven and set your timer for 30 minutes – but don’t go far! Ovens vary, so start checking at 30 minutes with the toothpick test.

Here’s how I know they’re done perfectly:

  • A toothpick inserted in the center comes out clean or with just a few moist crumbs
  • The edges pull slightly away from the pan
  • The top springs back when lightly pressed

Now, the hardest part – let them cool completely. I mean it! At least an hour, preferably two. Frosting warm bars is a recipe for melty disaster. I usually transfer the pan to a wire rack after about 15 minutes to speed up cooling.

Making the Brown Sugar Frosting

While your bars cool, let’s make that heavenly frosting. You’ll need:

  • A stand mixer or hand mixer (you can do it by hand, but your arm will hate you)
  • A spatula for scraping down the bowl
  • Patience (the good stuff takes time!)

Here’s how I make it:

  1. Cream the butter and cream cheese: Beat them together on medium speed until smooth and fluffy – about 2 minutes. Scrape down the bowl halfway through to make sure everything gets incorporated.
  2. Add sugars gradually: With the mixer on low, add powdered sugar about 1/2 cup at a time, then the packed brown sugar. This prevents sugar clouds from erupting in your kitchen (though if it happens, we’ve all been there!).
  3. Mix in vanilla: Once the sugars are incorporated, add your vanilla and mix for another 30 seconds.
  4. Adjust consistency: Now, add milk or cream one tablespoon at a time until the frosting is spreadable but still holds its shape. You want it thick enough to stay put when you spread it, but not so thick it tears your bars.

When your bars are completely cool, spread that glorious frosting evenly over the top. I like to use an offset spatula for this – it gives me more control. Now, the final test of willpower: let the frosting set for about 15 minutes before cutting. Trust me, cleaner slices are worth the wait!

Tips for Perfect Pumpkin Bars with Brown Sugar

After making these pumpkin bars more times than I can count (my family never gets tired of them!), I’ve picked up some tricks that make all the difference between good bars and oh-my-goodness bars. Here are my must-know tips:

Measure Your Flour Like a Pro

Too much flour is the #1 reason pumpkin bars turn out dry. Here’s how I do it: fluff the flour in the bag with a spoon, then gently spoon it into your measuring cup. Level it off with the back of a knife – no packing! If you press it down, you could end up with an extra 1/4 cup of flour without realizing it.

Room Temperature Ingredients Matter

I know it’s tempting to use cold eggs straight from the fridge, but they don’t mix into the batter as well. Take them out about 30 minutes before baking. Same goes for the cream cheese and butter for the frosting – softened ingredients blend smoother and create that dreamy, spreadable texture we all love.

Nut-Free? No Problem!

Not a fan of walnuts or pecans? Skip them entirely – the bars are still amazing. Or try these fun swaps: toasted coconut flakes for crunch, mini chocolate chips for sweetness (my kids’ favorite!), or even dried cranberries for a tart contrast to the brown sugar frosting.

The Secret to Smooth Frosting

If your frosting turns out grainy from the brown sugar (it happens to the best of us!), here’s my fix: let it rest for 10 minutes after mixing, then beat it again. The moisture from the butter and cream cheese helps dissolve the sugar crystals. Still too thick? Add milk one teaspoon at a time – you can always add more, but you can’t take it back!

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pumpkin bars with brown sugar

Pumpkin Bars with Brown Sugar Frosting

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Delicious pumpkin bars with brown sugar frosting, a perfect fall dessert that’s easy to make and full of warm spices.

  • Total Time: 50 minutes
  • Yield: 24 bars 1x

Ingredients

Scale
  • 1 1/2 cups all-purpose flour
  • 1 teaspoon baking soda
  • 1 teaspoon ground cinnamon
  • 1/2 teaspoon ground nutmeg
  • 1/4 teaspoon ground cloves
  • 1/2 teaspoon salt
  • 1 1/2 cups granulated sugar
  • 1/2 cup vegetable oil
  • 2 large eggs
  • 1 (15-ounce) can pumpkin puree (not pumpkin pie filling)
  • 1/2 cup chopped walnuts or pecans (optional)
  • 8 tablespoons (1 stick) unsalted butter, softened
  • 4 ounces cream cheese, softened
  • 3 cups powdered sugar
  • 1/2 cup packed light brown sugar
  • 1 teaspoon vanilla extract
  • 24 tablespoons milk or cream

Instructions

  1. Preheat oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.
  2. In a large bowl, whisk together flour, baking soda, cinnamon, nutmeg, cloves, and salt.
  3. In another bowl, whisk together sugar, oil, and eggs until smooth.
  4. Stir in pumpkin puree until fully incorporated.
  5. Gradually add dry ingredients to wet ingredients, mixing until just combined.
  6. Stir in walnuts or pecans, if using.
  7. Pour batter into prepared pan and spread evenly.
  8. Bake for 30-35 minutes, or until a toothpick inserted in center comes out clean.
  9. Let bars cool completely before frosting.
  10. For frosting: Beat butter and cream cheese until smooth.
  11. Gradually add powdered sugar and brown sugar, mixing until combined.
  12. Stir in vanilla extract.
  13. Add milk or cream, one tablespoon at a time, until frosting is spreadable.
  14. Spread frosting evenly over cooled bars. Cut and serve.

Notes

  • Store leftovers in an airtight container in the fridge for up to 4 days.
  • For a nut-free version, omit walnuts or pecans.
  • Ensure pumpkin puree is not pumpkin pie filling.
  • Author: Emily Frost
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Nutrition

  • Serving Size: 1 bar
  • Calories: 220
  • Sugar: 25g
  • Sodium: 120mg
  • Fat: 10g
  • Saturated Fat: 3g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 32g
  • Fiber: 1g
  • Protein: 2g
  • Cholesterol: 30mg

Variations for Pumpkin Bars with Brown Sugar

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One of the best things about these pumpkin bars is how easily you can tweak them to suit different tastes or dietary needs. Over the years, I’ve played around with all sorts of variations – here are my favorites that still keep that amazing brown sugar flavor we all love:

Gluten-Free Option

My sister-in-law can’t have gluten, so I’ve perfected this swap: use a 1:1 gluten-free flour blend (I like Bob’s Red Mill). The texture comes out slightly denser but still delicious. Just be sure to check that your baking soda and spices are gluten-free too – some brands aren’t!

Dairy-Free Adjustments

For the frosting, replace butter with vegan butter sticks and use dairy-free cream cheese. Coconut milk works great in place of regular milk – just start with less since it’s thinner. The bars themselves are already dairy-free (bonus!).

Spice It Up

If you’re like me and love extra warmth, try adding:

  • 1/4 teaspoon ground ginger for a little kick
  • A pinch of cardamom for something different
  • Orange zest in the frosting for bright contrast

Texture Twists

Instead of nuts, try mixing in:

  • White chocolate chips (they melt beautifully into the warm bars)
  • Diced crystallized ginger for spicy-sweet bites
  • Toasted pumpkin seeds for crunch

The beauty of this recipe is how forgiving it is – as long as you keep that pumpkin-brown sugar magic at the heart of it, you really can’t go wrong!

Storing and Serving Pumpkin Bars with Brown Sugar

Now that you’ve made these gorgeous pumpkin bars, let’s talk about keeping them fresh and serving them just right. I’ve learned a few things the hard way (like frosting that slid right off warm bars – oops!), so here’s everything you need to know:

Storing Your Pumpkin Bars

These bars stay moist for days if you store them properly. Here’s my method:

  • Room temperature: If you’re serving them within 24 hours, just cover the pan tightly with foil or plastic wrap. The frosting stays perfectly creamy.
  • Refrigerator: For longer storage (up to 4 days), pop them in an airtight container in the fridge. I layer them between parchment paper so they don’t stick together.
  • Freezer: Yes, you can freeze them! Cut into squares first, then freeze on a baking sheet before transferring to freezer bags. They’ll keep for 2 months – just thaw overnight in the fridge.

Serving Tips

Here’s how I make these bars shine when serving:

  • Temperature matters: Cold frosting can be too firm. Take refrigerated bars out 30 minutes before serving so the frosting softens to that perfect creamy texture.
  • Clean cuts: Wipe your knife between slices with a warm, damp cloth for picture-perfect bars every time.
  • Garnish game: A sprinkle of cinnamon or chopped pecans on top makes them extra special for guests.

Pro tip: If you’re transporting these to a potluck, chill them first so the frosting firms up, then cover tightly. They’ll travel much better that way!

Nutritional Information

I know we’re all trying to be a little more mindful these days, so here’s the scoop on what’s in these pumpkin bars with brown sugar frosting. Keep in mind – these are estimates based on standard ingredients, and your exact numbers might vary depending on brands or adjustments you make. But hey, we’re talking pumpkin here – that’s basically a vegetable, right? (I like to tell myself that anyway!)

  • Serving size: 1 bar (1/24 of recipe)
  • Calories: 220
  • Total fat: 10g (3g saturated)
  • Cholesterol: 30mg
  • Sodium: 120mg
  • Total carbohydrates: 32g
  • Fiber: 1g
  • Sugars: 25g
  • Protein: 2g

Remember, nutritional values are estimates and vary based on ingredients used. If you’re watching specific dietary needs, you can always adjust the recipe – try reducing the sugar slightly or using a sugar substitute, swap in whole wheat flour for part of the all-purpose, or use low-fat cream cheese in the frosting. But personally? I say life’s too short not to enjoy the full deliciousness of these bars – everything in moderation!

Common Questions About Pumpkin Bars with Brown Sugar

Over the years, I’ve gotten so many questions about these pumpkin bars – which tells me you all love them as much as I do! Here are the answers to the ones I hear most often:

Can I freeze these pumpkin bars?

Absolutely! These freeze like a dream. Here’s how I do it: let them cool completely after frosting, then cut into squares. Freeze them in a single layer on a baking sheet first (about 2 hours), then transfer to freezer bags or an airtight container with parchment between layers. They’ll keep beautifully for up to 2 months. Thaw overnight in the fridge – the frosting stays creamy!

Can I use homemade pumpkin puree?

You sure can – I’ve done it many times! Just make sure your homemade puree is thick like canned pumpkin, not watery. I roast sugar pie pumpkins, scoop out the flesh, then puree and drain it in cheesecloth. One medium pumpkin usually gives me enough for this recipe. Pro tip: homemade puree often makes the bars even more moist, so you might need to bake them 5 minutes longer.

Help! My frosting is too runny – how do I fix it?

Oh honey, I’ve been there! First, pop the bowl in the fridge for 15 minutes to firm up the butter and cream cheese. Then beat in more powdered sugar, 1/4 cup at a time, until it thickens. If it’s still too thin, a teaspoon of cornstarch can help (but don’t overdo it). Worst case? Chill the frosted bars – the cold will set the frosting beautifully, even if it was a bit loose when you spread it.

Got more questions? Drop them in the comments – I’m always happy to help troubleshoot your baking adventures!

Share Your Experience

You know what makes my day? Seeing your pumpkin bars turn out just as delicious as mine did! There’s nothing better than hearing how these brown sugar-frosted beauties became part of your family traditions too. Did your kids gobble them up like mine always do? Did your coworkers beg for the recipe at the office potluck? I want to hear all about it!

If you snapped a photo of your masterpiece (that glossy brown sugar frosting is just begging to be Instagrammed, isn’t it?), I’d love to see your creation. Tag me @FrostyRecipes so I can ooh and aah over your baking skills. And if you made any fun tweaks – maybe added chocolate chips or tried a spice variation – share those too! Your ideas might just inspire someone else’s next batch.

Happy baking, friends! May your pumpkin bars be moist, your frosting smooth, and your fall season filled with all the cozy baking adventures.

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Emily Frost
Emily Frost

Hi, I’m Emily Frost — mom of two, home cook, and the creator of Frosty Recipes! Here you’ll find easy, family-friendly meals from Wendy’s copycat favorites to cozy dinners, sweet desserts, and everything in between.

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