Marble Cake with Vanilla and Chocolate Swirls

Preparation Preheat the oven to 350°F and grease a bundt cake pan. In a small bowl, combine cocoa powder and chocolate chips for the swirl batter.

Cake Batter In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. In a large bowl, cream the butter and sugar until light and fluffy. Add the eggs one at a time, beating well after each addition. Mix in the sour cream, milk, and vanilla extract. Gradually add the flour mixture to the wet ingredients, mixing until just combined.

Swirl Batter Transfer 1 1/2 cups of the cake batter to the bowl with the cocoa powder and chocolate chips. Add 1/4 cup of granulated sugar and 2 tablespoons of unsweetened cocoa powder. Stir gently to combine.

Assembly Spoon dollops of the vanilla and chocolate batters into the prepared bundt pan, alternating between the two. Use a knife to gently swirl the batters together for a marbled effect.

Baking Bake the cake for 45-50 minutes, or until a toothpick inserted into the center comes out clean. Cool the cake in the pan for 15 minutes, then transfer to a wire rack to cool completely.