Blueberry buckle is a beloved New England classic—a tender, buttery cake absolutely bursting with juicy blueberries, topped with a sweet, crunchy streusel. It gets its name from the way the cake “buckles” as it bakes, creating a charming, rustic surface.
It’s essentially the perfect coffee cake, with a tender crumb, plenty of berries, and that irresistible streusel topping. Serve it warm with a scoop of vanilla ice cream or a dollop of whipped cream, and you’ll understand why this dessert has been cherished for generations. Perfect for breakfast, brunch, or dessert.
Instructions
Make the Streusel
In a medium bowl, whisk together the flour, granulated sugar, brown sugar, cinnamon, and salt. Add the cold butter cubes. Using a pastry blender or your fingertips, cut the butter into the dry ingredients until the mixture forms irregular crumbles. Refrigerate while you make the cake batter.
Prep and Preheat
Preheat your oven to 350°F (175°C). Grease a 9-inch square baking pan or a 10-inch cast iron skillet.
Toss Blueberries
In a small bowl, gently toss the blueberries with 2 tablespoons of flour. This helps prevent them from sinking to the bottom of the cake.
Combine Dry Ingredients
In a medium bowl, whisk together the flour, baking powder, and salt. Set aside.
Cream Butter and Sugar
In a large bowl or stand mixer fitted with the paddle attachment, beat the softened butter and granulated sugar together on medium speed until light and fluffy, about 3-4 minutes.
Add Eggs and Vanilla
Add the eggs one at a time, beating well after each addition. Beat in the vanilla.
Add Sour Cream
With the mixer on low speed, beat in the sour cream until just combined.
Add Dry Ingredients
Gradually add the flour mixture, mixing on low speed until just combined. Do not overmix.
Fold in Blueberries
Gently fold the floured blueberries into the batter with a spatula until evenly distributed.
Transfer to Pan
Spread the batter evenly in the prepared pan.
Add Streusel
Sprinkle the streusel generously over the top of the batter, covering completely.
Bake
Bake for 40-45 minutes, until a toothpick inserted in the center comes out clean and the streusel is golden brown.
Cool
Let the buckle cool in the pan on a wire rack for at least 20 minutes before serving.
Serve
Serve warm with vanilla ice cream or whipped cream. Garnish with fresh mint if desired.
Pro-Tips for Blueberry Buckle Perfection
- Use Fresh or Frozen Blueberries: Both work beautifully. If using frozen, add them directly from the freezer without thawing to prevent bleeding.
- Flour the Blueberries: This prevents them from sinking to the bottom of the cake.
- Cold Butter for Streusel: The streusel needs cold butter to create those perfect crumbly clumps.
- Don’t Overmix: Overmixing develops gluten and can make the cake tough. Mix just until combined.
- Cast Iron Skillet: Baking in a cast iron skillet gives the buckle a beautiful rustic look and crisp edges.
- Serve Warm: Blueberry buckle is at its absolute best warm, with the streusel still crunchy and the berries bursting with juice.
- Make Ahead: This cake keeps well for 2-3 days and is delicious at room temperature, but warm it up for the full experience.
- Variations: Try with raspberries, blackberries, or a mix of berries.
This Blueberry Buckle is a classic coffee cake with berries, absolutely perfect.
