Ingredients
- 1 1/2 cups all-purpose flour
- 1 tsp fine salt
- 1 tsp baking powder
- 1/4 tsp baking soda
- 8 tbsp unsalted butter, softened
- 3/4 cup sugar
- 2 large eggs, room temperature
- 2 tbsp sour cream, room temperature
- 2 tsp vanilla extract
- 2/3 cup buttermilk plus 2 tbsp, divided, at room temperature
- 3 tbsp cocoa powder
- 1 1/2 cups (350 g) salted butter, cubed and softened
- 6 cups (700 g) powdered sugar, sifted
- 1 tsp vanilla extract
- 1 tsp boiling water
Instructions
- Preheat oven to 350°F and line a muffin tin with cupcake liners.
- Whisk flour, salt, baking powder, and baking soda in a bowl; set aside.
- Cream together softened butter and sugar until fluffy. Add eggs one at a time, then mix in sour cream and vanilla.
- Alternate adding the dry mix with buttermilk until just combined.
- Scoop out one cup of batter into another bowl. Combine this portion with cocoa powder and remaining two tablespoons of buttermilk. Divide this mixture in half; color one half red and the other half blue using food coloring.
- Fill cupcake liners with alternating spoonfuls of colored batter and white batter.
- Swirl gently with a toothpick for a marbled effect.
- Bake for 18–22 minutes; cool on a rack before frosting.
- Prep Time: 20 minutes
- Cook Time: 20 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 cupcake (60g)
- Calories: 220
- Sugar: 18g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 6g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: <1g
- Protein: 2g
- Cholesterol: 40mg
Keywords: For best results, use room temperature ingredients to ensure even mixing. Tap the muffin tin before baking to remove air bubbles for uniform cupcakes. Feel free to customize frosting colors or add festive toppings!