Description
This Marble Cupcakes recipe features a moist and tender vanilla cupcake base swirled with rich chocolate batter, creating a beautiful marbled effect. Topped with a luxurious swirled Swiss meringue buttercream frosting in vanilla and chocolate, these cupcakes combine elegant flavors with a stunning visual appeal, perfect for celebrations or everyday indulgence.
Ingredients
Vanilla Batter
- 1 and ⅔ cups (200g) all-purpose flour, measured properly
 - ½ teaspoon baking powder
 - ¼ teaspoon baking soda
 - ½ teaspoon salt
 - ½ cup (113g) unsalted butter, melted and cooled
 - 1 cup (200g) granulated sugar
 - 1 large egg, room temperature
 - ¼ cup (61g) full fat yogurt or sour cream, room temperature
 - ¾ cup (180mL) whole milk or cream
 - 1 teaspoon vanilla extract
 
Chocolate Batter
- 1 and ½ Tablespoons (8g) unsweetened cocoa powder
 - 1 Tablespoon (15mL) whole milk or cream
 
Swirled Swiss Meringue Buttercream
- 6 large egg whites
 - 1 and ½ cups (300g) granulated sugar
 - 1 and ½ cups (340g) unsalted butter, softened to room temperature and sliced into 1 Tablespoon portions
 - 2 teaspoons vanilla extract
 - ⅛ teaspoon salt
 - 3 ounces (85g) quality semi-sweet chocolate, melted and cooled
 
Instructions
- Preheat and prepare pans: Preheat the oven to 350ºF (177ºC). Line a 12-count cupcake pan with cupcake liners and set aside.
 - Mix dry ingredients for vanilla batter: In a large bowl, whisk together flour, baking powder, baking soda, and salt. Set aside.
 - Combine wet ingredients for vanilla batter: Using a handheld or stand mixer fitted with paddle attachment, beat melted butter, sugar, egg, yogurt, milk or cream, and vanilla extract on medium-high until smooth.
 - Add dry to wet ingredients: Reduce mixer speed to low, slowly add dry ingredients to wet mixture until just combined. Fold gently by hand to remove large flour lumps; small lumps are okay.
 - Prepare chocolate batter: Remove ½ cup of vanilla batter into a small bowl. Stir in cocoa powder and milk until fully combined.
 - Assemble marble cupcakes: Add a heaping 1 Tablespoon of vanilla batter to each cupcake liner. Add 1 heaping teaspoon of chocolate batter on top. Repeat by adding another 1 Tablespoon vanilla followed by 1 teaspoon chocolate batter, layering vanilla and chocolate batters (vanilla, chocolate, vanilla, chocolate). Fill liners about ⅔ to ¾ full.
 - Create marble effect: Use a toothpick or cake tester to gently swirl the batters in each liner in a swirly pattern without stirring in circles.
 - Bake cupcakes: Bake for 15-17 minutes or until a toothpick inserted in the center comes out mostly clean. Cool cupcakes completely before frosting.
 - Prepare swiss meringue buttercream: Wipe bowl and utensils with lemon juice or vinegar to remove grease. Heat water in a saucepan until steaming (double boiler setup). Combine egg whites and sugar in a heatproof bowl, place over steaming water, whisk vigorously until sugar dissolves and mixture reaches 160ºF (71ºC), about 1.5 to 2 minutes.
 - Whisk meringue: Transfer bowl to stand mixer fitted with whisk attachment, whip on high until medium peaks form (like shaving cream texture), which may take 10-15 minutes. If too warm for peaks, cool briefly.
 - Incorporate butter: Reduce mixer to low speed, add softened butter one tablespoon at a time, fully incorporating before adding more. Continue until all butter is added, mixture might appear curdled but will smooth out.
 - Finalize vanilla buttercream: Increase mixer speed to high, beat until medium to medium-stiff peaks form. Add vanilla extract and salt, beat until stiff peaks form. Chill briefly if needed to help peaks form.
 - Divide and flavor frosting: Remove half of buttercream to separate bowl. Add cooled melted chocolate to remaining buttercream, whisk on low until fully incorporated and uniform chocolate color achieved.
 - Pipe swirled frosting: Prepare a piping bag with Wilton 1M or 2D tip inside a tall glass. Fill one side with vanilla buttercream and the other with chocolate buttercream. Remove air pockets and twist bag closed. Pipe swirls over cooled cupcakes using steady pressure.
 - Store cupcakes: Store cupcakes at room temperature up to 3 days or refrigerate up to 5 days. Freeze well up to 3 months, thaw at room temperature or in refrigerator before serving.
 
Notes
- Use full fat dairy products to ensure moisture in cupcakes as melted butter reduces natural moisture.
 - Room temperature ingredients help with smooth batter and easier incorporation, quickly warm eggs in warm water for 5-10 minutes.
 - Do not use carton egg whites for the buttercream; the egg whites are cooked during the process, making the buttercream safe.
 - Use unsalted butter to avoid overpowering saltiness; ensure butter is at room temperature but not warm.
 - The cupcake batter can be made without a mixer if preferred, offering flexibility.
 - Frosting can be customized—feel free to use a single flavor or other frosting varieties instead of the swirled Swiss meringue buttercream.
 
- Prep Time: 20 minutes
 - Cook Time: 16 minutes
 - Category: Dessert
 - Method: Baking
 - Cuisine: American