Tender Blueberry Breakfast Cake

This blueberry breakfast cake is tender, buttery, and loaded with juicy berries. A cinnamon crumb topping makes it feel like a bakery coffee cake, right from your own oven.

It comes together in one pan with simple ingredients and works equally well for a slow weekend morning or a weekday treat with coffee.

Why This One Stays In The Rotation

The crumb is soft but not heavy. Greek yogurt gives it a fine, moist texture that holds up for days without drying out, and the blueberries stay plump as they bake into the batter.

That crumb topping is the real payoff. It bakes up golden and crunchy with a hint of cinnamon, so every bite has a little buttery crackle. There is no glaze needed, just a dusting of powdered sugar if you feel like it.

Ingredients

• 1/2 cup all-purpose flour: for the crumb topping
• 1/4 cup packed light brown sugar: topping sweetness and crunch
• 1/2 teaspoon ground cinnamon: warm spice for the topping
• Pinch of salt: for the topping
• 3 tablespoons cold unsalted butter: cut into small pieces for the topping
• 1 1/2 cups all-purpose flour: base of the cake
• 1 1/2 teaspoons baking powder: leavening for lift
• 1/4 teaspoon baking soda: helps with tenderness
• 1/2 teaspoon salt: balances sweetness in the cake
• 6 tablespoons unsalted butter, softened: room temperature for creaming
• 2/3 cup granulated sugar: sweetness and structure
• 1 large egg: at room temperature
• 1 teaspoon vanilla extract: rounds out the flavor
• 3/4 cup plain full-fat Greek yogurt: at room temperature, for moisture and tenderness
• 1 cup fresh or frozen blueberries: if using frozen, do not thaw

Variations / Substitutions

• Swap the berries: raspberries, blackberries, or chopped strawberries all work. Stick with 1 cup.
• Use sour cream instead of yogurt: same amount, the cake will be just as moist with a slightly tangier note.
• Add citrus: stir 1 teaspoon lemon or orange zest into the butter mixture for a bright lift.
• Skip the topping: the cake is lovely on its own, or you can drizzle a simple glaze of powdered sugar and milk over the cooled cake.
• Make it gluten-free: use a 1:1 gluten-free flour blend that contains xanthan gum. The crumb will be a touch more delicate but still tender.

If you like fruity breakfast cakes, you will probably also enjoy Strawberry Lemon Breakfast Cake.

How To Make Blueberry Breakfast Cake

Step 1: Mix the Crumb Topping

Preheat the oven to 350°F (175°C) and butter a 9-inch square baking pan. In a small bowl, stir together the 1/2 cup all-purpose flour, 1/4 cup brown sugar, 1/2 teaspoon cinnamon, and a pinch of salt. Add the 3 tablespoons cold butter pieces and cut them in with a fork or your fingers until the mixture looks like wet sand with some pea-sized lumps. Set it aside.

The topping should hold together when you squeeze a handful. If it feels powdery and dry, work in an extra teaspoon of cold butter, a little at a time. Those small lumps melt into crunchy bits as the cake bakes.

Step 2: Cream the Butter and Sugar

In a large bowl, beat the 6 tablespoons softened butter and 2/3 cup granulated sugar with a hand mixer or stand mixer until pale and fluffy, about 3 minutes. Beat in the egg and vanilla until smooth, then scrape down the bowl. Add the 3/4 cup Greek yogurt and mix until combined.

The mixture might look slightly curdled after adding the yogurt. That is completely normal, and it will smooth out once the dry ingredients go in.

Step 3: Whisk Together the Dry Ingredients

In a separate bowl, whisk the 1 1/2 cups flour, baking powder, baking soda, and 1/2 teaspoon salt. Pour the dry mix into the butter mixture and stir with a spatula just until no streaks of flour remain. The batter will be thick.

Stop mixing the moment the flour disappears. Overworking the batter can make the cake tough, and we want a soft, delicate crumb.

Step 4: Layer the Batter and Blueberries

Spread half the batter into the prepared pan, using an offset spatula or the back of a spoon to reach the corners. Scatter the 1 cup blueberries evenly over the batter. If you are using frozen berries, toss them first with a tablespoon of the dry mix from step 3 to help them stay suspended. Dollop the remaining batter over the berries and spread it gently to mostly cover them, then sprinkle the crumb topping evenly on top.

Don’t worry if a few berries peek through the batter. The topping will fill in the gaps, and the cake bakes around the fruit, creating little pockets of jammy blueberry.

Step 5: Bake the Cake

Bake for 40 to 45 minutes, until the top is deeply golden and a toothpick inserted in the center comes out clean or with just a few moist crumbs attached. Place the pan on a wire rack and let the cake cool for at least 15 minutes before slicing.

The edges will pull away slightly from the pan, and the crumb topping will be firm to the touch with a glossy, caramelized look. That is your cue it’s ready to come out of the oven.

Step 6: Slice and Dust with Powdered Sugar

Run a thin knife around the edge of the pan to loosen any sticky spots. Slice the cake into squares right in the pan, or lift it out using the parchment if you lined the pan. Dust generously with powdered sugar and serve warm or at room temperature.

The first slice reveals a pale, tender crumb with deep blue streaks where the berries burst. It’s the kind of cake that disappears fast, so don’t count on leftovers.

Tips For The Best Breakfast Cake

• Use full-fat Greek yogurt for the richest, tenderest crumb. Low-fat or nonfat yogurt still works, but the cake will be a little less lush.
• If your blueberries are frozen, leave them frozen and toss them with a spoonful of the dry flour mixture before layering. This keeps them from sinking to the bottom.
• Add a teaspoon of lemon zest along with the vanilla for a bright, fresh note that balances the sweet fruit.
• Let the cake cool in the pan for at least 15 minutes, then run a knife around the edge before slicing. Cutting hot cake can make it crumble.
• If your crumb topping seems to be browning too fast, tent the pan loosely with foil for the last 10 minutes of baking.

Bake times by pan:

Keeping Leftovers Fresh

Store leftover cake in an airtight container at room temperature for up to 2 days, then move it to the fridge. Refrigerated cake will keep for about 4 days. To bring back that just-baked warmth, reheat individual slices in the microwave for 15 to 20 seconds or in a 300°F oven for 10 minutes to recrisp the topping. The cake is also pleasant cool straight from the container.

Frequently Asked Questions

Can I make this cake in advance?

Yes. Bake and cool it completely, then wrap tightly and keep at room temperature overnight. Dust with powdered sugar just before serving. The crumb topping softens slightly as it sits, but a quick warm-up in the oven revives the crunch.

Why did my cake sink in the middle?

It usually means the cake was underbaked or the batter was overmixed. Make sure the toothpick comes out clean before pulling it from the oven, and mix the dry ingredients only until combined.

Can I substitute buttermilk for the yogurt?

Absolutely. Use the same 3/4 cup buttermilk. The cake will still be moist with a nice tang, though the crumb may be a little less dense than the yogurt version.

Can I turn this into muffins?

Yes, divide the batter among 12 lined muffin cups, fill them about two-thirds full, and bake at 350°F for 18 to 22 minutes. The topping will be more scattered than on the cake, but just as tasty.

Why is my crumb topping not crunchy?

The butter may have melted too soon. Make sure your butter is very cold when you cut it in, and refrigerate the topping while you mix the batter if your kitchen is warm. Baking at the right temperature also helps the topping set up crisp.

Blueberry Breakfast Cake Recipe

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr

Servings: 9 servings

Calories: 320

Ingredients Method Notes

Ingredients

  

• 1/2 cup all-purpose flour
• 1/4 cup packed light brown sugar
• 1/2 teaspoon ground cinnamon
• Pinch salt
• 3 tablespoons cold unsalted butter
• 1 1/2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/4 teaspoon baking soda
• 1/2 teaspoon salt
• 6 tablespoons unsalted butter, softened
• 2/3 cup granulated sugar
• 1 large egg
• 1 teaspoon vanilla extract
• 3/4 cup plain full-fat Greek yogurt
• 1 cup fresh or frozen blueberries (do not thaw if frozen)

Method

 

1. Preheat oven to 350°F (175°C) and butter a 9-inch square pan. For the crumb topping, stir together 1/2 cup flour, brown sugar, cinnamon, and a pinch of salt. Cut in the cold butter until crumbly. Set aside.
2. Beat the softened butter and granulated sugar until light and fluffy. Add the egg and vanilla, then mix in the yogurt until combined.
3. Whisk the remaining 1 1/2 cups flour, baking powder, baking soda, and salt in a separate bowl. Stir the dry mixture into the wet mixture just until blended.
4. Spread half the batter in the pan. Scatter blueberries on top, then dollop the rest of the batter over them and spread gently. Sprinkle the crumb topping evenly over the batter.
5. Bake for 40 to 45 minutes until a toothpick inserted in the center comes out clean and the topping is golden. Cool in the pan on a wire rack for at least 15 minutes.
6. Slice into squares and dust with powdered sugar if you like. Serve warm or at room temperature.

Notes

The cake is at its very best while still warm, but it keeps beautifully. Wrap leftovers tightly and store at room temperature for a couple of days, then refrigerate. If you used frozen blueberries, the baking time may run a few minutes longer.