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This Buttermilk Blueberry Breakfast Cake takes about 15 minutes to prep and bakes into a soft, buttery cake filled with fresh blueberries and bright lemon flavor. The crumb stays tender thanks to the buttermilk, while the sprinkle of sugar on top creates a lightly crisp finish that makes it feel a little extra special without adding any extra work.
This cake has become one of my favorite things to make during blueberry season because it feels simple but still a little special. It’s easy enough for a regular weekday morning, but also one of those recipes that looks right at home sitting out for brunch with coffee and fresh fruit.
The best part is that it’s sweet enough to feel like a treat, but not so rich that you feel like you accidentally started your morning with dessert. Warm coffee, a slice of this cake, and maybe a few extra blueberries scattered on the plate somehow makes an ordinary morning feel much better.
What to Know Before You Start
- This is more of a breakfast or brunch cake than a dessert cake. It’s lightly sweet with a soft crumb, similar to a blueberry muffin or coffee cake without heavy frosting or filling.
- The recipe is simple and beginner-friendly. The batter comes together in about 15 minutes using basic pantry ingredients and one mixing bowl.
- Fresh blueberries give the best texture and flavor. They stay juicy without adding excess moisture to the batter.
- The texture is soft, buttery, and tender. Buttermilk keeps the crumb fluffy while the sugar sprinkled on top creates a lightly crisp finish.
- It works well for more than just breakfast. Serve it for brunch, afternoon coffee, baby showers, spring gatherings, or as an easy snack cake during the week.
- This cake holds up well after baking. It stays soft for a couple of days, making it a great make-ahead option for busy mornings or hosting.
- The flavor is simple in the best way. The blueberries and lemon zest keep it fresh and bright without feeling overly rich or complicated.
Ingredients You’ll Need
- Fresh blueberries – The star of the cake, creating juicy pockets of flavor throughout every slice. Fresh berries work especially well here because they hold their shape and keep the batter from becoming too wet.
- All-purpose flour – Gives the cake structure while still keeping the crumb soft and tender.
- Baking powder – Helps the cake rise into a light, fluffy texture.
- Kosher salt – Balances the sweetness and enhances the buttery flavor.
- Unsalted butter – Creates the rich, soft crumb that gives this cake its bakery-style texture.
- Lemon zest – Adds brightness and helps the blueberry flavor stand out without overpowering the cake.
- Sugar – Sweetens the batter while also creating the lightly crisp top layer after baking.
- Egg – Helps bind the batter together and contributes to the tender texture.
- Vanilla extract – Adds warmth and depth that makes the cake taste homemade and comforting.
- Buttermilk – Keeps the cake moist and fluffy while adding a subtle tang that balances the sweetness.
How to Make Buttermilk Blueberry Breakfast Cake
This blueberry breakfast cake comes together with a simple cake batter and bakes into a soft, buttery cake filled with juicy blueberries. The process is straightforward and beginner-friendly, but a few small techniques help give the cake its light texture.
Step 1: Prepare the pan and blueberries
Preheat the oven to 350 degrees Fahrenheit. Grease a 9-inch square baking dish with butter or nonstick spray.
Place the blueberries in a small bowl and toss them with 1/4 cup of the flour. Set aside.
Pro Tip: Tossing the blueberries with flour helps keep them from sinking to the bottom of the cake while baking.
Step 2: Mix the dry ingredients
In a medium bowl, whisk together the remaining flour, baking powder, and salt until evenly combined.
Step 3: Cream the butter and sugar
In the bowl of a stand mixer fitted with the paddle attachment, beat the butter, lemon zest, and 3/4 cup plus 1 tablespoon sugar together until light and fluffy, about 2 to 3 minutes.
Add the egg and vanilla extract and mix until smooth.
Step 4: Finish the batter
Add the flour mixture to the batter in batches, alternating with the buttermilk. Mix just until combined after each addition.
The batter will be thick.
Pro Tip: Stop mixing as soon as the flour disappears into the batter. Overmixing can make the cake dense instead of soft and tender.
Step 5: Fold in the blueberries
Gently fold the blueberries into the batter with a spatula until evenly distributed.
Pro Tip: Fold gently to keep the blueberries from breaking and turning the batter purple.
Step 6: Bake the cake
Spread the batter evenly into the prepared baking dish and smooth the top. Sprinkle the remaining tablespoon of sugar over the batter.
Bake for 35 to 45 minutes, or until the top is lightly golden brown and a toothpick inserted into the center comes out clean or with a few moist crumbs.
Allow the cake to cool for 10 to 15 minutes before slicing.
Pro Tip: If your blueberries are especially juicy, the cake may need a few extra minutes in the oven. Check the center instead of relying only on bake time.
Optional Crumb Topping
For more of a blueberry coffee cake texture, mix together 1/3 cup brown sugar, 1/3 cup flour, 1/4 teaspoon cinnamon, and 3 tablespoons cold butter until crumbly. Sprinkle over the batter before baking.
Expert Tips
- Use room temperature ingredients for a smoother batter. Softened butter creams more evenly, and room temperature buttermilk helps everything mix together smoothly.
- Don’t overmix the batter once the flour is added. Stir just until combined to keep the cake soft and tender instead of dense.
- The batter will be thick. That’s normal and helps support the blueberries throughout the cake.
- Check the center carefully before removing from the oven. The juicy blueberries can add extra moisture, so the middle may need a few extra minutes.
- Serve slightly warm if possible. The buttery texture and blueberry flavor are especially good while the cake is still a little warm.
Variations and Substitutions
- Use frozen blueberries when fresh aren’t in season. Add them straight from the freezer and avoid thawing first.
- Swap the lemon zest for orange zest. Orange gives the cake a softer citrus flavor that still pairs well with blueberries.
- Add a crumb topping for more coffee cake texture. A simple brown sugar streusel makes this feel more like a bakery-style brunch cake.
- Try other berries. Raspberries, blackberries, or a mixed berry blend all work well in this recipe.
- Add a light lemon glaze if serving for brunch or dessert. It gives the cake a slightly more polished finish.
Serving Ideas
This blueberry breakfast cake pairs especially well with coffee, fresh fruit, and simple brunch favorites.
You can also serve it as an afternoon treat or pack slices for an easy grab-and-go breakfast during busy mornings. It works especially well as a simple blueberry snack cake to keep on the counter during busy weeks.
Storage, Freezing & Reheating
- Store – Keep the cake covered at room temperature for up to 3 days. Avoid refrigerating since it can dry out the texture.
- Freeze – Let the cake cool completely, then wrap individual slices tightly and freeze for up to 1 month.
- Defrost – Thaw slices at room temperature before serving.
- Reheat – Warm individual slices in the microwave for 10 to 15 seconds for a softer texture.
FAQs
Yes. Frozen blueberries work well in this recipe, but add them straight from the freezer without thawing first. Thawed berries release extra moisture and can turn the batter purple. You may also need to add a few extra minutes to the baking time.
Buttermilk helps create a soft, tender crumb while adding a slight tang that balances the sweetness. The acidity also reacts with the baking powder to help the cake rise and stay light instead of dense.
They’re similar, but breakfast cake is usually lighter and less sweet than traditional coffee cake. This blueberry breakfast cake has a soft, buttery texture with a lightly crisp sugar topping instead of a heavy streusel layer.
Yes. This cake stays soft for a couple of days when stored covered at room temperature, so it works well for brunches, holidays, or meal prep. You can also prepare the batter ahead and refrigerate it overnight before baking.
The top should look lightly golden and the center should feel set instead of wet or glossy. A toothpick inserted into the center should come out clean or with a few moist crumbs.
What can I use instead of buttermilk?
You can make a simple buttermilk substitute by adding 1/2 tablespoon lemon juice or vinegar to 1/2 cup milk. Let it sit for 5 to 10 minutes before using.
Other Blueberry Breakfast Recipes
If you love easy blueberry breakfasts, here are a few more recipes that are perfect for slow weekends, brunches, or make-ahead mornings.
- Blueberry Brioche French Toast Bake – Soft brioche baked with blueberries and a custardy center that’s perfect for brunch or holiday mornings.
- Mini Blueberry Muffins – Bite-sized blueberry muffins with a soft texture that work well for breakfast, lunchboxes, or snacks.
- Blueberry Banana Bread – A moist banana bread packed with fresh blueberries and simple pantry ingredients.
- Blueberry Peach Cobbler Muffins – Bakery-style muffins filled with blueberries and peaches with a soft cobbler-inspired texture.
- Banana Berry Crunch Baked Oatmeal – Hearty baked oatmeal filled with berries, banana, and a crunchy topping that’s great for make-ahead breakfasts.
Have you tried this Buttermilk Blueberry Breakfast Cake recipe? Leave a rating and review at the end of the post to let us know what you think!
Buttermilk Blueberry Breakfast Cake
Ingredients
- 2 cups fresh blueberries
- 2 cups all-purpose flour
- 2 teaspoons baking powder
- 1 teaspoon kosher salt
- ½ cup unsalted butter, room temperature
- 2 teaspoons lemon zest
- ¾ cup + 2 tablespoons sugar
- 1 egg
- 1 teaspoons vanilla extract
- ½ cup buttermilk
Instructions
- Preheat the oven to 350 degrees. Grease a 9-inch square baking dish with butter.
- In a small bowl, toss the blueberries with ¼ cup of flour; set aside. Whisk together the remaining flour, baking powder and salt in a medium bowl and set aside.
- In the bowl of an electric mixer fitted with the paddle attachment, cream the butter, lemon zest and ¾ cup plus one tablespoon of the sugar together until light and fluffy. Add the egg and vanilla and beat until combined.
- Add the flour mixture to the batter a little at a time, alternating with the buttermilk. Fold in the blueberries.
- Spread batter into greased baking dish and sprinkle batter with remaining tablespoon of sugar. Bake for 35-45 minutes, or until top is slightly golden brown and a toothpick inserted into the center comes out clean. Allow to cool for 10-15 minutes before serving.
Notes
- Toss the blueberries in flour to help prevent sinking.
- Fresh blueberries provide the best texture, but frozen blueberries also work.
- Avoid overmixing the batter to keep the cake soft and tender.
- Tent loosely with foil if the top browns too quickly.
- Store covered at room temperature for best texture.
Nutrition
Nutrition information is automatically calculated, so should only be used as an approximation.
Cake for Breakfast??? Yes, please! My kids will be so excited to hear we are having cake for breakfast tomorrow!
Blueberries and CAKE for breakfast! How could I pass on this!! So delicious and comes together easily. Thanks for another winning recipe.