Buttermilk Rhubarb Bread Loaf With a 15-Minute Prep

If you’ve got rhubarb sitting on your counter and no idea what to do with it, this Buttermilk Rhubarb Bread Loaf is exactly what you need to make right now. As a busy mom, I live for recipes that feel special but don’t demand half my afternoon. This loaf is just that. It’s moist, tender, and topped with the most irresistible cinnamon sugar crust. You mix everything in one bowl with simple pantry staples, and it’s in the oven in 15 minutes flat. Slice it warm for breakfast, grab a piece as a snack, or dress it up for dessert. It honestly works every single time.

Table of Contents

Table of Contents

Why You Will Love This Buttermilk Rhubarb Bread Loaf

Honestly, this recipe checks every box. Here’s why I keep coming back to it again and again:

• Ready to bake in just 15 minutes of prep time
• Everything comes together in one bowl, so cleanup is a breeze
• No mixer needed, just a spoon and some stirring
• Uses simple pantry staples you probably already have on hand
• That cinnamon sugar topping bakes into the most gorgeous, slightly crispy crust
• Works for breakfast, an afternoon snack, or a casual dessert
• Fresh or frozen rhubarb both work perfectly here

Ingredients for Buttermilk Rhubarb Bread Loaf

Here’s everything you need to pull this loaf together. I love that it’s mostly pantry staples with fresh rhubarb as the star. Grab your ingredients before you start since this batter comes together really fast.

For the batter:

• 1 1/2 cups packed light brown sugar
• 2/3 cup vegetable oil
• 1 large egg
• 1 cup buttermilk
• 2 1/2 cups all-purpose flour
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1 1/2 cups diced fresh rhubarb, cut into small pieces

For the cinnamon sugar topping:

• 1/2 cup white granulated sugar
• 1 tablespoon softened butter
• 1 teaspoon ground cinnamon

Ingredient Notes and Substitutions

A few quick things worth knowing before you start mixing:

• Frozen rhubarb works just as well as fresh. Just thaw it completely and drain off any extra liquid before adding it to your batter. Too much moisture will throw off the texture.
• Vegetable oil is what keeps this loaf so tender and moist. Canola oil is a perfect swap if that’s what you have on hand.
• Buttermilk adds a lovely tang and keeps the crumb soft. No buttermilk? No problem. Just add 1 tablespoon of white vinegar or lemon juice to a cup of regular milk, give it a stir, and let it sit for about 5 minutes. Done.
• Brown sugar brings a deeper, richer sweetness than white sugar would. It also adds a little extra moisture, which is exactly what you want here.

How to Make Buttermilk Rhubarb Bread Loaf

This loaf comes together so easily. Just take it one step at a time and you’ll be totally fine.

1. Preheat your oven to 350 degrees F and grease a 5×9-inch loaf pan well. Don’t skip the greasing or you’ll have a tough time getting the loaf out later.
2. Grab a large bowl and add your ingredients one at a time, stirring after each addition. Start with the brown sugar, then the oil, egg, and buttermilk. Add the flour, baking soda, and salt next. Finally, fold in the diced rhubarb. The key here is to stir just until everything is combined. Overmixing is the number one thing that turns a quick bread dense and tough, so stop as soon as you don’t see dry streaks.
3. Pour the batter into your prepared loaf pan and spread it out evenly.
4. In a small bowl, mix together the white sugar, softened butter, and cinnamon. Use your fingers or a fork to work it into a crumbly mixture. It should look a little like wet sand.
5. Scatter the topping evenly over the batter and press it down very lightly with your fingertips. You want it to stick, not sink.
6. Bake for about 1 hour. Start checking at the 50-minute mark by inserting a toothpick into the center. If it comes out clean or with just a few moist crumbs, you’re good. Wet batter means it needs more time.
7. Let the loaf cool in the pan before you slice it. I know it’s hard to wait, but it really does slice so much cleaner once it’s had time to set.

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Tips for the Best Buttermilk Rhubarb Bread Loaf

A few simple things make a big difference with this one:

• Don’t overmix. Stir just until each ingredient is combined and then stop. A few lumps in the batter are totally fine and actually a good sign.
• Check your loaf at 50 minutes since every oven runs a little differently. Mine tends to run hot, so I always peek early.
• Measure your flour by spooning it into the measuring cup and leveling it off with a straight edge. Scooping directly from the bag packs in too much flour and dries out the loaf.
• Press the cinnamon sugar topping on gently. A light press is all it needs to adhere without sinking into the batter.
• Let the loaf cool fully in the pan before slicing. It slices so much cleaner and the crumb holds together much better once it’s had time to rest.

Buttermilk Rhubarb Bread Loaf Variations

Once you’ve made this loaf once, you’ll want to play around with it. Here are a few of my favorite ways to switch things up:

• Stir in 1/2 cup of chopped walnuts or pecans for a little crunch in every bite.
• Swap half the rhubarb for diced fresh strawberries. That rhubarb and strawberry combo is an absolute classic for a reason. If you love strawberry and rhubarb, you might also enjoy this pie recipe.
• Add a teaspoon of fresh orange zest to the batter for a bright, citrusy twist that pairs so nicely with the rhubarb.
• Replace half the all-purpose flour with whole wheat flour for a slightly heartier, nuttier loaf.

Serving Suggestions for Buttermilk Rhubarb Bread Loaf

This loaf is so versatile. Here are my favorite ways to serve it:

• Warm slices with a generous pat of butter make the most perfect simple breakfast.
• Pair a slice with your morning coffee or afternoon tea for a cozy, satisfying snack.
• Top it with a dollop of whipped cream or a scoop of vanilla ice cream and suddenly it’s dessert.
• Set it out on a brunch table and watch it disappear faster than anything else you put out. Trust me on that one.

Storage and Reheating Instructions

This loaf keeps really well, so don’t stress if you can’t finish it in one sitting. Here’s how to store it:

• Room temperature: Wrap the loaf tightly in plastic wrap or store it in an airtight container. It stays fresh for up to 3 days.
• Refrigerator: Wrap it well and refrigerate for up to 5 days. The cinnamon sugar topping softens a little in the fridge, but the flavor is still wonderful.
• Freezer: Wrap the loaf tightly in plastic wrap, pop it into a freezer bag, and freeze for up to 2 months. Thaw overnight at room temperature before slicing.

To reheat, just microwave individual slices for 15 to 20 seconds. You can also warm them in a low oven until just heated through. Either way, it tastes like it just came out of the oven.

Nutritional Information for Buttermilk Rhubarb Bread Loaf

Here’s a quick look at the estimated nutrition per slice. Keep in mind these are just estimates and your actual numbers may vary a little depending on the specific ingredients and brands you use.

• Calories: 310 kcal
• Total Fat: 13g
• Saturated Fat: 2g
• Unsaturated Fat: 10g
• Trans Fat: 0g
• Cholesterol: 20mg
• Sodium: 210mg
• Total Carbohydrates: 46g
• Fiber: 1g
• Sugar: 28g
• Protein: 4g

Frequently Asked Questions About Buttermilk Rhubarb Bread Loaf

Can I use frozen rhubarb in this Buttermilk Rhubarb Bread Loaf?
Yes, absolutely. Frozen rhubarb works great in this easy rhubarb bread. Just thaw it completely first and drain off any extra liquid. Too much water in the batter will mess with the texture, so don’t skip that step.

What can I substitute for buttermilk?
So easy to fix this one. Add 1 tablespoon of white vinegar or lemon juice to a cup of regular milk, stir, and let it sit for 5 minutes. It works just as well in this rhubarb quick bread.

How do I know when the loaf is done baking?
Insert a toothpick into the center. Clean or just a few moist crumbs means it’s ready. Wet batter means it needs more time. Start checking at 50 minutes.

Can I make this recipe into muffins?
Yes! Use the same batter, divide it into a greased muffin tin, add the topping, and bake at 350 degrees F for about 20 to 25 minutes.

How should I store the bread to keep it moist?
Wrap your homemade rhubarb bread tightly in plastic wrap and store it at room temperature for up to 3 days or in the fridge for up to 5 days.

Share Your Buttermilk Rhubarb Bread Loaf

Did you make this loaf? I would love to hear how it turned out! Drop a star rating and leave a comment below telling me all about it. And if you snapped a photo, please share it on social media and tag Frosty Recipes. There is nothing that makes my day more than seeing your beautiful bakes. Happy baking! Follow us on Facebook for more updates!

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