When you want something sweet for breakfast that still feels comforting and homemade, this Blueberry Buttermilk Breakfast Cake is the perfect choice. It’s tender, buttery, and lightly sweet with juicy blueberries in every bite. The buttermilk keeps the crumb soft and moist, while a simple sugar topping bakes into a delicate, golden crust.
Perfect with coffee or tea, great for brunch tables, and easy enough for a weekday bake, this cake tastes like a warm hug—especially when served slightly warm.
Ingredients
Serves 9 (1 square 8×8-inch pan)
For the Cake
- 1/2 cup (113g) unsalted butter, softened
- 3/4 cup (150g) granulated sugar
- 1 large egg
- 1 teaspoon vanilla extract
- 2 cups (250g) all-purpose flour
- 2 teaspoons baking powder
- 1/2 teaspoon salt
- 1/2 cup (120ml) buttermilk
- 2 cups (300g) fresh blueberries (or frozen, do not thaw)
For the Topping
- 2 tablespoons granulated sugar
- 1/2 teaspoon cinnamon (optional)
- 1 tablespoon coarse sugar (optional, for crunch)
Preparation Time
- Prep time: 15 minutes
- Baking time: 35–40 minutes
- Cooling time: 10–15 minutes
- Total time: About 1 hour
Step-by-Step Instructions
Step 1: Preheat and Prep the Pan
Preheat oven to 350°F (175°C). Grease an 8×8-inch baking pan and line with parchment paper if desired.
Step 2: Cream Butter and Sugar
In a mixing bowl, beat butter and sugar until light and fluffy (about 2 minutes). Add egg and vanilla and mix until smooth.
Step 3: Mix Dry Ingredients
In a separate bowl, whisk flour, baking powder, and salt.
Step 4: Combine Batter
Add dry ingredients to the butter mixture in two additions, alternating with buttermilk. Mix just until combined—do not overmix.
Step 5: Fold in Blueberries
Gently fold in blueberries. Spread batter evenly into the prepared pan.
Step 6: Add Topping
Sprinkle the top with sugar (and cinnamon/coarse sugar if using). This creates a light crunchy top.
Step 7: Bake
Bake for 35–40 minutes, or until a toothpick inserted in the center comes out clean (a few moist crumbs are okay).
Step 8: Cool and Serve
Cool for 10–15 minutes before slicing. Serve warm or at room temperature.
Serving Suggestions
- Serve warm with a little butter for the ultimate breakfast vibe.
- Add a dollop of Greek yogurt or whipped cream for brunch.
- Drizzle with a touch of honey or maple syrup for extra sweetness.
- Pair with scrambled eggs and fruit for a full breakfast plate.
- Dust with powdered sugar for a bakery-style finish.
Nutritional Highlights
| Nutrient | Per Serving (1 slice, 1/9 cake) |
|---|---|
| Calories | 280 |
| Protein | 4 grams |
| Total Fat | 12 grams |
| Saturated Fat | 7 grams |
| Carbohydrates | 40 grams |
| Sugars | 18 grams |
| Fiber | 2 grams |
| Sodium | 220 milligrams |
Nutritional Notes:
- Blueberries add antioxidants, vitamin C, and natural sweetness.
- Buttermilk helps create a tender crumb and adds a subtle tang.
- You can reduce sugar slightly if your blueberries are very sweet.
Tips for Perfect Breakfast Cake
- Toss blueberries with 1 teaspoon flour to help prevent sinking.
- If using frozen blueberries, add them straight from the freezer (no thawing).
- Don’t overmix the batter—this keeps the cake tender.
- Let the cake cool a bit before slicing so it holds together nicely.
- Store covered to keep it moist.
Variations to Try
- Lemon Blueberry: Add 1 tablespoon lemon zest and 1 tablespoon lemon juice.
- Mixed Berry: Replace half the blueberries with raspberries or blackberries.
- Streusel Topping: Swap sugar topping for a crumb topping (butter + flour + sugar).
- Whole Wheat: Replace 1/2 cup flour with whole wheat flour.
- Mini Muffin Cakes: Bake in a muffin pan for 18–22 minutes.
This Blueberry Buttermilk Breakfast Cake is a simple, cozy bake that feels special without being complicated. Soft, moist, and packed with blueberries, it’s perfect for mornings, brunch, or a sweet snack any time of day.
Whether you serve it warm with coffee or pack it for later, this cake guarantees a tender, berry-filled bite every time.
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