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Baking recipe · from the recipe book

Raspberry Buttermilk Sheet Cake with Fudgy Cocoa Swirl

A tender, tangy buttermilk crumb studded with bursting raspberries and a soft, fudgy cocoa layer swirled through the middle.

Raspberry Buttermilk Sheet Cake with Fudgy Cocoa Swirl

Ingredients

  • 2¼ cups280 gAll-purpose flour
  • 1¾ tsp8 gBaking powder
  • ¾ tsp3 gBaking soda
  • ½ tsp3 gSalt
  • ⅔ cup140 gUnsalted buttermelted and cooled slightly
  • 1 cup200 gGranulated sugar
  • 2 large100 gEggsroom temperature
  • 1 cup (240 ml)240 gButtermilk, low-fatroom temperature
  • 2 tsp8 gVanilla extract
  • 2 tsp4 gLemon zest
  • 2½ cups300 gRaspberriesdivided
  • ⅓ cup30 gUnsweetened cocoa powdersifted
  • ¼ cup packed60 gBrown sugarpacked
  • ⅓ cup60 gSemisweet chocolate chips
  • 3 tbsp45 gWaterhot
  • 2½ tbsp20 gPowdered sugar

Steps

  1. Preheat the oven to 350°F (175°C). Brush a 9x13-inch pan with about 1 teaspoon of the melted butter and line the bottom with parchment.
  2. Make the cocoa filling first: in a small bowl, whisk the unsweetened cocoa powder, brown sugar and hot water into a smooth paste, then stir in the chocolate chips and set aside.
  3. In a medium bowl, whisk the flour, baking powder, baking soda and salt.
  4. In a large bowl, whisk the remaining melted butter with the granulated sugar until glossy, then whisk in the eggs one at a time, followed by the buttermilk, vanilla and lemon zest.
  5. Stir the flour mixture into the butter mixture just until no dry streaks remain.
  6. Spread half of the batter in the pan. Scatter half of the raspberries over it, then drop spoonfuls of the cocoa filling on top and swirl gently with a knife.
  7. Spread the remaining half of the batter over the filling, then press the remaining half of the raspberries lightly into the top.
  8. Bake 35 to 40 minutes, until a toothpick inserted in the cake part (not a berry) comes out clean.
  9. Cool in the pan on a rack for at least 1 hour, dust with the powdered sugar, and cut into 12 slices.

Food safety: Don't taste raw dough or batter: raw flour and raw eggs can carry germs.

Contains: Milk, Egg, Gluten. Some brands contain soy.

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Saved in the Every Helping recipe book on October 24, 2026.

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