This easy blueberry butter cake recipe makes a tender, golden snack cake bursting with juicy blueberries in every bite. Made with softened butter, simple pantry ingredients, and either milk or buttermilk, it takes just 15 to 20 minutes to prepare and bakes at 350°F (175°C) for 40 to 50 minutes.
The finished cake has a lightly crisp, sugary top, a moist buttery crumb, and bright blueberry flavor that is especially delicious with optional lemon zest. Serve it warm or at room temperature for breakfast, afternoon coffee, brunch, or an unfussy dessert that feeds 8 to 10 people.
Jump to RecipeWhy You’ll Love This Recipe
This blueberry butter cake is the kind of bake that feels special without requiring a complicated technique. The batter comes together in one main mixing bowl, the ingredients are familiar, and the cake can be served with nothing more than a dusting of sugar or a cup of coffee.
Butter gives the crumb a rich, classic flavor, while milk or buttermilk keeps it soft and tender. Blueberries become jammy as they bake, creating little pockets of purple sweetness throughout the cake and a beautiful fruit-studded top.
The recipe is also flexible enough for different occasions. Bake it in a 9-inch round pan for neat wedges or use an 8-inch square pan for easy snack-sized pieces.
If you enjoy fruit-forward morning bakes, you may also like these carrot cake muffins, which make another wonderful choice for breakfast or a casual sweet treat.
Ingredients You’ll Need
Each ingredient has a clear role in creating a soft, flavorful cake. Gather everything before mixing so the batter can be prepared without delays.
- Unsalted butter: Use softened butter for proper creaming with the sugar. Unsalted butter lets you control the final salt level.
- Granulated sugar: Use 3/4 cup for a less-sweet cake or up to 1 cup for a more traditional dessert-style sweetness.
- Eggs: Room-temperature eggs blend more easily into the butter mixture and support an even rise.
- Flour, baking powder, and salt: These form the structure and provide lift and balance.
- Milk or buttermilk: Either works well. Buttermilk adds a gentle tang and makes the crumb especially tender.
- Blueberries: Fresh berries are ideal, but frozen blueberries can also be used without thawing.
- Lemon zest and coarse sugar: These are optional, but lemon brightens the berries and coarse sugar adds a delicate crunch.
For a different kind of make-ahead sweet, keep our peanut butter fudge in mind. Its rich peanut butter flavor makes a nice contrast to this light, fruity cake.
How to Make It Step-by-Step
Step 1: Prepare the pan and oven. Heat the oven to 350°F (175°C), grease a 9-inch round cake pan or an 8-inch square pan, and line the bottom with parchment. The parchment makes it easier to lift the cooled cake out cleanly and helps protect the bottom from sticking.
Step 2: Prepare the blueberries. Place the berries in a small bowl and gently toss them with 1 tablespoon of all-purpose flour. This light coating helps limit sinking and absorbs some of the extra moisture released during baking.
Step 3: Mix the dry ingredients. Whisk the flour, baking powder, and fine salt together in a separate bowl. Breaking up any lumps now means the leavening and salt will distribute evenly through the batter.
Step 4: Cream the butter and sugar. Beat the softened butter with the sugar for about 2 to 3 minutes, until the mixture looks noticeably lighter and fluffy. This step incorporates air, which contributes to the cake’s tender texture and even rise.
Step 5: Add the eggs and flavorings. Beat in the eggs one at a time, mixing well after each addition. Add the vanilla extract and finely grated lemon zest if using, scraping the bowl as needed so the mixture stays uniform.
Step 6: Combine the batter. Add the dry ingredients in two or three additions, alternating with the milk or buttermilk. Mix only until no obvious streaks of flour remain, because overmixing can make the cake dense rather than soft.
Step 7: Add the berries. Fold about three-quarters of the blueberries gently into the batter, taking care not to crush them. Spread the thick batter into the prepared pan, then scatter the remaining berries over the surface and sprinkle with coarse sugar if desired.
Step 8: Bake and test. Bake for 40 to 50 minutes, watching for a set center and a golden top. Insert a toothpick into the center, away from a blueberry; it should come out clean or with a few moist crumbs.
Step 9: Cool before serving. Let the cake rest in the pan for 10 to 15 minutes, then transfer it to a wire rack. Serve it warm or allow it to cool completely before slicing for the neatest pieces.
Pro Tips for a Tender Cake
Ingredient temperature is one of the easiest ways to improve the result. Softened butter should be pliable but not melted, and the eggs and milk should be at room temperature so they emulsify into the butter mixture instead of making it look curdled.
Measure flour carefully by spooning it into a measuring cup and leveling the top, or use a kitchen scale for the stated 188 grams. Too much flour can create a thick, dry batter that does not spread easily in the pan.
Do not overmix once the flour is added. A few small streaks can disappear as you fold in the berries, and gentle mixing helps preserve a delicate crumb.
If using frozen blueberries, keep them frozen and toss them with the flour before folding them into the batter. They may cool the batter and release extra moisture, so plan on approximately 5 to 10 additional minutes in the oven.
Always check the center rather than testing directly beside a berry. Blueberry juice can make a toothpick look wet even when the surrounding cake is fully baked.
For another recipe that shows how butter can bring savory ingredients together, see this Worcestershire butter roast beef. It is not a dessert, but it is a useful reminder that quality butter adds depth in both sweet and savory cooking.
Serving Suggestions
A warm slice of blueberry butter cake is excellent on its own, especially when the berries are still soft and fragrant. For a more dessert-like plate, add a spoonful of softly whipped cream, vanilla ice cream, or plain Greek yogurt.
The optional lemon zest is worth using when you want a brighter flavor. You can also add a very light dusting of confectioners’ sugar after the cake has cooled, though the coarse sugar topping already provides a pleasant finish.
- Serve warm with coffee for breakfast or brunch.
- Pair room-temperature slices with tea for an afternoon snack.
- Add vanilla ice cream for an easy after-dinner dessert.
- Pack cooled squares for picnics, lunchboxes, or casual gatherings.
For a colorful, low-effort dessert idea for celebrations, take a look at this patriotic dump cake. It is a fun option when you want a festive fruit dessert with minimal preparation.
Storage, Freezing, and Reheating
Store the cooled cake covered at room temperature for up to 2 days, or refrigerate it for up to 4 days. Refrigeration can make the crumb feel firmer, so let slices sit at room temperature before serving.
To reheat one slice, warm it gently in the microwave for a few seconds at a time until just warm. A low oven can also refresh several slices, but avoid overheating because the blueberries may release more juice and the cake can dry out.
The cake can be frozen after it has cooled completely. Wrap individual slices or the whole cake securely, place it in a freezer-safe container, and thaw at room temperature before serving.
If you prefer a sharper citrus dessert, our easy lime bars offer a bright alternative with a completely different texture and flavor profile.
Easy Blueberry Butter Cake
Ingredients
Method
- Heat the oven to 350°F (175°C). Grease a 9-inch round cake pan or an 8-inch square pan, then line the bottom with parchment.
- Toss the blueberries with 1 tablespoon of flour. In a separate bowl, whisk together the remaining flour, baking powder, and salt.
- Beat the softened butter and sugar for 2 to 3 minutes, until light and fluffy. Add the eggs one at a time, mixing after each addition, then blend in the vanilla and lemon zest if using.
- Add the dry ingredients in two or three additions, alternating with the milk or buttermilk. Mix only until the batter is combined.
- Fold in about three-quarters of the blueberries. Spread the batter into the prepared pan, scatter the remaining berries over the top, and sprinkle with coarse sugar if desired.
- Bake for 40 to 50 minutes, until the center is set and a toothpick inserted into the center comes out clean or with a few moist crumbs. Cool in the pan for 10 to 15 minutes, then transfer to a rack.
Notes
Final Thoughts
This easy blueberry butter cake is a dependable recipe for using fresh summer berries or a bag of frozen blueberries from the freezer. Its buttery crumb, tender texture, and lightly crisp topping make it satisfying enough for dessert while remaining simple enough for a relaxed breakfast.
Choose the amount of sugar based on your preference, use room-temperature ingredients for the smoothest batter, and remember to test the cake in the center. Once it has cooled for 10 to 15 minutes, slice it into generous wedges and enjoy the warm berry flavor with coffee, tea, or a scoop of ice cream.
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