This Mixed Berry Streusel Breakfast Cake evolved during my time developing resort brunch menus. When creating signature breakfast items, I discovered that guests gravitated toward berry-studded treats with crunchy toppings. After countless test batches, this version emerged as the clear winner—balancing a tender crumb with juicy berries and a satisfyingly crisp streusel that doesn’t get soggy even when made ahead.
Mixed Berry Streusel Breakfast Cake
Tender breakfast cake studded with juicy seasonal berries and topped with a crunchy cinnamon-oat streusel for the perfect morning treat.
Prepare the Oven and Pan
Preheat the oven to 375°F. Spray a 9x13 inch baking pan with nonstick cooking spray and set aside.
Make the Streusel Topping
In a medium bowl, combine the topping ingredients (flour, quick oats, brown sugar, and cinnamon). Using a fork or pastry blender, cut in the cold cubed butter until the mixture resembles coarse crumbs with some larger clumps. Use your hands to gently press some of the mixture into larger chunks. Set aside.
Mix the Dry Ingredients
In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt until evenly combined.
Combine Wet Ingredients
Create a well in the center of the dry ingredients. Add the eggs, milk, and melted butter. Beat lightly until a smooth batter forms, being careful not to overmix. A few small lumps are perfectly fine.
Add Berries and Assemble
Spread the batter evenly into the prepared pan. Distribute the blueberries, blackberries, and raspberries evenly over the top of the batter, gently pressing them in slightly.
Add Streusel and Bake
Sprinkle the prepared streusel topping evenly over the berries and batter. Bake for 45 minutes, or until the cake rises around the berries and a toothpick inserted in the center comes out clean with just a few moist crumbs.
Cool and Prepare Glaze
Allow the cake to cool completely on a wire rack. While cooling, combine the powdered sugar and milk in a small bowl, stirring until smooth to create a pourable glaze.
Finish and Serve
Once the cake has cooled completely, drizzle with the glaze. Allow the glaze to set for about 15 minutes before cutting into squares and serving.
Easy Berry Crumb Cake Recipe
Learn how to make a delicious mixed berry breakfast cake with a crunchy streusel topping perfect for weekend mornings.
What makes this cake particularly practical is its versatility. Bake it in a traditional cake pan for elegant squares or in a muffin tin for grab-and-go portions. It works beautifully with frozen berries when fresh aren’t in season, and the batter comes together in under 15 minutes. Make it the night before—the flavors actually deepen overnight, and a quick 10-second microwave reheat restores that just-baked texture.
Every forkful delivers a perfect harmony of textures—buttery cake punctuated with bursts of warm, jammy berries and crowned with a cinnamon-scented oat streusel that shatters pleasantly between your teeth. The sweet-tart balance wakes up your taste buds without overwhelming them first thing in the morning.
Don’t reserve this cake just for special brunches; it deserves a place in your regular breakfast rotation. Try varying the berries seasonally or adding lemon zest to brighten the flavors. Serve slightly warm with a dollop of Greek yogurt for a protein boost that transforms this treat into a satisfying meal that will power your morning.
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