Ingredients
Method
- Preheat your oven to 350°F. Line a 12-cup muffin tin with paper liners.
- Whisk together the flour, sugar, baking powder, and salt in a large bowl.
- In another bowl, beat the softened butter until creamy. Add the eggs one at a time, beating well after each addition. Then mix in the milk and vanilla extract.
- Pour the wet ingredients into the dry ingredients. Fold gently with a spatula until just combined.
- Transfer about one-third of the batter to a separate bowl. Mix the cocoa powder with hot water until smooth and fold into the smaller portion of batter.
- Spoon the vanilla batter into each liner, filling them about halfway. Add dollops of chocolate batter on top and swirl with a toothpick or skewer.
- Bake for 18-20 minutes until a toothpick inserted comes out clean.
- Let the cupcakes cool in the pan for 5 minutes, then transfer to a wire rack to cool completely.
Notes
Use room temperature ingredients for best results. Don't overmix the batters or swirl too vigorously to maintain distinct marble patterns.
