Gluten Free Blueberry Buckle Cake

This gluten free blueberry buckle cake is one of my favorite things to bake when blueberries are in season. It’s soft, tender, and loaded with juicy berries in every bite.

If you’ve never had a buckle before, it’s basically a simple cake with fruit folded into the batter and a crumbly streusel on top. Think of it as a cross between coffee cake and a fruit crumble.

The best part is that it’s completely gluten free, and nobody would ever guess. It tastes just like the classic version, which is always the goal around here.

The streusel topping gets golden and crunchy in the oven, and it pairs so well with the soft cake underneath. It’s the kind of thing you’ll want to make over and over again.

You can enjoy it as a dessert, a snack, or even with your morning coffee. It’s simple to put together and doesn’t need any fancy equipment or techniques.

Why You’ll Love This Recipe

Perfect for Gluten Free Baking – This buckle cake uses a simple 1-to-1 gluten free baking flour so you get the same soft, tender crumb as a traditional cake without any complicated flour blends.

Loaded with Fresh Blueberries – With 2 full cups of fresh blueberries folded right into the batter, every single bite is bursting with sweet, juicy berry flavor.

That Cinnamon Streusel Topping is Everything – The buttery, crumbly streusel with brown sugar and cinnamon on top gives this cake a crunchy golden layer that makes it feel extra special without extra effort.

Great for Breakfast or Dessert – A blueberry buckle cake is one of those amazing treats that works just as well with your morning coffee as it does after dinner, so you really get double the use out of one bake.

Ingredients

For the Cake

• 1 3/4 cups Gluten Free 1-to-1 Baking Flour
• 1 1/2 tsp Baking Powder
• 1/4 tsp Salt
• 1/3 cup Unsalted Butter, softened
• 3/4 cup Granulated Sugar
• 1 Large Egg
• 1 tsp Pure Vanilla Extract
• 1/2 cup Whole Milk
• 2 cups Fresh Blueberries

For the Streusel

• 1/2 cup Gluten Free 1-to-1 Baking Flour
• 1/3 cup Light Brown Sugar, packed
• 1/2 tsp Ground Cinnamon
• 1/4 cup Cold Unsalted Butter, cubed

How to Make

Step 1

Preheat the oven to 350 F and grease a 9-inch square baking pan. For the streusel, mix together 1/2 cup gluten free 1-to-1 baking flour, brown sugar, and cinnamon in a small bowl. Cut in the cold butter with your fingers until the mixture forms coarse, crumbly clumps. Set aside.

Step 2

In a medium bowl, whisk together 1 3/4 cups gluten free 1-to-1 baking flour, baking powder, and salt.

Step 3

In a large bowl, beat the softened butter and granulated sugar on medium-high speed for about 2 minutes until light and fluffy. Add the egg and vanilla extract and beat until combined. Add the flour mixture in two additions, alternating with the milk, mixing on low speed just until combined. Gently fold in the fresh blueberries.

Step 4

Spread the batter evenly into the prepared pan. Scatter the streusel evenly over the top, pressing it lightly into the batter.

Step 5

Bake for 40 to 45 minutes until the streusel is golden and a toothpick inserted in the center comes out clean. Let cool in the pan for at least 20 minutes before slicing and serving.

Helpful Tips

Make the Streusel First

Always make the streusel before you start the cake batter. You want those butter pieces to stay cold so the streusel holds its crumbly shape while baking, and if it sits in the fridge while you prep the batter, even better.

When you cut the cold butter in with your fingers, stop when you see pea-sized clumps mixed with some smaller sandy bits. You want a mix of textures, not a uniform paste. That variety is what gives you those golden, crunchy clusters on top of the finished cake.

If your kitchen is warm, pop the bowl of streusel in the fridge until you’re ready to use it. Soft butter will melt too fast in the oven and you’ll end up with a flat, greasy topping instead of those nice crumbly bits.

Make Sure the Butter Is Actually Softened

The recipe calls for softened butter in the cake batter, and this matters more than you might think. Softened means the butter gives easily when you press it with your finger but still holds its shape. It shouldn’t be melty or greasy looking.

If your butter is too cold, it won’t cream properly with the sugar and you’ll get a dense, heavy cake. If it’s too warm or partially melted, the batter won’t trap air the way it needs to and the cake won’t rise as well.

A good trick is to cut the butter into small pieces and leave it on the counter for about 30 to 45 minutes before you start. That usually gets it to the perfect stage without overdoing it.

Alternate the Flour and Milk

The recipe says to add the flour mixture in two additions, alternating with the milk. This means you add about half the flour, mix on low, then add the milk, mix on low, then add the rest of the flour and mix just until combined.

This method keeps the batter smooth and prevents the milk from curdling when it hits the butter mixture directly. It also helps the gluten free flour absorb the liquid evenly so you don’t get dry pockets or a gummy texture.

Keep your mixer on low speed for this whole step. You’re just bringing everything together, not beating air into it. Once you can’t see streaks of flour or milk anymore, stop mixing.

You Might Also Like

• Gluten Free Blueberry Crumble Bars
• Gluten Free Blueberry Muffins
• Gluten Free Classic Coffee Cake
• Gluten Free Lemon Blueberry Blondies
• Gluten Free Peach Cobbler

Frequently Asked Questions

Can I use frozen blueberries instead of fresh?

Yes, you can use frozen blueberries, but don’t thaw them first. Toss them straight from the freezer into the batter so they don’t bleed too much juice and turn your cake purple.

You may also need to add a couple extra minutes to the bake time since the frozen berries will cool the batter down slightly.