Blueberry Muffin Top Cake
A tender, buttery cake studded with fresh blueberries and topped with a signature muffin-top crown of crumb topping and extra berries. The cake stays moist for days and delivers classic muffin flavor in an easy-to-slice format, perfect for breakfast or dessert.
- Prep
- 20 min
- Cook
- 45 min
- Wait
- 15 min
- Total
- 1 hr 20 min
- Makes
- 1 cake (12 slices)
Steps
Before you start
- Preheat oven to 375°F (190°C) and position rack in the middle.
- Bring eggs and buttermilk to room temperature (about 30 minutes).
- Have all ingredients measured and ready before you begin mixing.
Mix dry ingredients
- In a medium bowl, whisk together 2 cups (240 g) all-purpose flour, 2.5 tsp (12 g) baking powder, and 0.75 tsp (4 g) salt.
- Set aside.
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Ready when: Dry ingredients are fully combined with no lumps of baking powder.
Tip: Whisk the leavening agents through the flour evenly for consistent rise.
Cream butter and sugar
- In a large mixing bowl, beat the softened 0.5 cup (113 g) unsalted butter with 1 cup (200 g) granulated sugar on medium speed for 3–4 minutes until light and fluffy.
- Scrape down the bowl as needed.
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Ready when: Mixture is pale, fluffy, and about doubled in volume.
Tip: Proper creaming incorporates air, resulting in a tender, light crumb.
Add eggs and vanilla
- Add the 2 room-temperature beaten eggs one at a time, beating well on medium speed after each addition (about 30 seconds per egg).
- Add 1.5 tsp (7.5 ml) vanilla extract and beat until fully combined.
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Ready when: Mixture is smooth and fully emulsified with no streaks of egg visible.
Tip: Add eggs slowly and at room temperature so they emulsify smoothly; cold eggs can cause the batter to curdle.
Alternate dry and wet
- Add one-third of the flour mixture to the butter mixture and stir gently on low speed until just combined, about 10 seconds.
- Add half of the 0.75 cup (180 ml) buttermilk and stir on low until almost combined.
- Repeat with another third of flour, the remaining buttermilk, and then the final third of flour, stirring until just blended after each addition.
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Ready when: Batter is smooth with no visible flour streaks; do not overmix.
Tip: Alternating wet and dry keeps the batter tender; stop mixing as soon as combined or the cake will be tough.
Fold in lemon zest and blueberries
- If using, fold in 1.5 tsp lemon zest.
- In a small bowl, toss 1 cup (150 g) of the fresh blueberries with 1 tablespoon of the reserved flour to coat lightly (this prevents sinking).
- Gently fold the coated berries into the batter with a rubber spatula, making 10–12 gentle strokes.
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Ready when: Blueberries are evenly distributed; batter is not overmixed.
Tip: Coating berries in flour suspends them throughout the cake rather than letting them sink to the bottom.
Prepare crumb topping
- In a small bowl, combine 0.5 cup (60 g) flour, 0.5 cup (100 g) packed brown sugar, and 1 tsp (2.5 g) cinnamon.
- Add the cold 0.25 cup (57 g) butter cut into small pieces.
- Using your fingertips, rub the butter into the flour mixture until it resembles coarse breadcrumbs with some pea-sized pieces remaining.
- If using, stir in 0.5 cup (45 g) old-fashioned oats.
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Ready when: Mixture resembles coarse breadcrumbs with small clumps; no large flour streaks remain.
Tip: Keep the butter cold so it creates distinct crumbs rather than a dense paste; this gives the topping a crispy texture.
Fill pan and top
- Pour the batter into a 9×13-inch (23×33 cm) baking pan.
- Spread level with a spatula.
- Scatter the remaining 0.5 cup (75 g) fresh blueberries evenly over the batter.
- Sprinkle the crumb mixture over the top in an even layer, gently pressing some clumps to stay in place.
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Ready when: Batter is level and topped with berries and crumb mixture evenly distributed.
Tip: Don't pack the crumb topping too firmly or it will become dense; a light hand gives a muffin-top texture.
Bake until goldenOven 375°F / 190°C
- Bake at 375°F (190°C) for 40–45 minutes until the crumb topping is golden brown and a skewer inserted into the center of the cake (avoiding berries) comes out clean or with a few moist crumbs.
- The cake should spring back when lightly touched in the center.
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Ready when: Crumb topping is golden brown; a skewer in the center comes out clean or with just a few moist crumbs; center of cake springs back when lightly pressed.
Tip: Check at 40 minutes; if the topping is browning too quickly, loosely tent with foil for the final 5 minutes.
Cool before serving
- Allow the cake to cool in the pan for 15 minutes on a wire rack.
- You can slice and serve warm (the cake will be tender and moist), or let it cool completely in the pan for cleaner slices.
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Ready when: Cake has cooled enough to be handled; it no longer steams when you touch the topping.
Tip: Cooling in the pan helps the cake set; if you need to remove it earlier, run a knife around the edges first.
Good to know
Tips
- For a more pronounced muffin-top effect, pile the crumb topping slightly higher in the center of the cake; it will create a natural dome as it bakes.
- If your berries are very large, halve them so the topping bakes evenly and the berries cook through.
- Don't skip the flour coating on the folded-in berries—it's the difference between a studded cake and sinking fruit.
- This cake is at its best served still slightly warm with a cup of coffee or tea; the crumb topping is crispiest then.
Make ahead
Bake the cake up to 2 days ahead. Cool completely, wrap tightly in plastic wrap or foil, and store at room temperature or in the fridge.
Storage & reheating
Room temperature: 2 days in an airtight container. Refrigerator: 4–5 days loosely covered. Freezer: up to 2 months; wrap cooled cake in plastic wrap and foil, then thaw at room temperature for 2–3 hours. To reheat, warm individual slices in a 300°F (150°C) oven for 8–10 minutes until warm.
Substitutions
- buttermilk → plain Greek yogurt thinned with 1–2 tablespoons milk, or milk mixed with 1 tablespoon lemon juice (let sit 5 minutes). Greek yogurt yields a slightly denser, tangier cake; the lemon-milk mixture works well for a classic muffin flavor.
- fresh blueberries → thawed frozen blueberries (drain excess liquid before folding in). Frozen berries work just as well; thaw and drain to prevent excess moisture and discoloration.
- old-fashioned rolled oats → chopped walnuts or pecans (0.5 cup / 50 g). Nuts add crunch and richness to the topping; reduce sugar in topping by 1 tablespoon if preferred.
- lemon → 0.5 tsp lemon extract or 0.25 tsp almond extract. Extract is optional; lemon zest gives the most authentic muffin flavor, but these alternatives add subtle brightness.
