Ultimate Marble Cupcakes

Chocolate and vanilla marble cupcakes with chocolate and vanilla swirl frosting on top! These cupcakes are perfect for when you cant decide between a chocolate or vanilla treat!
Ingredients
Cupcakes
1 and 23 cups 209g allpurpose flour spooned leveled
12 teaspoon baking powder
14 teaspoon baking soda
12 teaspoon salt
12 cup 8 Tbsp 113g unsalted butter melted
1 cup 200g granulated sugar
1 large egg room temperature
14 cup 60g yogurt
34 cup 1 Tablespoon 195ml milk divided
2 teaspoons pure vanilla extract

2 Tablespoons 10g unsweetened natural cocoa powder
Milk Chocolate Frosting
1 and 34 cups 210g confectioners sugar
14 cup 21g unsweetened natural cocoa powder
12 cup 8 Tbsp 113g unsalted butter softened to room temperature
2 Tablespoons 30ml heavy cream or halfandhalf
1 teaspoon pure vanilla extract
salt to taste
Vanilla Frosting
12 cup 8 Tbsp 113g unsalted butter softened to room temperature
1 and 34 cups 210g confectioners sugar
2 Tablespoons 30ml heavy cream or halfandhalf
1 teaspoon pure vanilla extract
salt to taste
Instructions
Preheat oven to 350F 177C. Line a 12count muffin pan with cupcake liners and an additional pan with 2 liners. This recipe makes about 14 cupcakes. Set them aside.
Make the cupcakes in a medium bowl mix together flour baking powder baking soda and salt. Set aside. In a large microwavesafe bowl melt butter in the microwave. Whisk in sugarmixture will be gritty. Chill in the refrigerator for 1 minute. Stir in egg yogurt 34 cup milk and vanilla extract until combined. Slowly mix in dry ingredients until no lumps remain. Batter will be thick. Transfer 34 cup of batter to another medium bowl. Mix in cocoa powder and 1 Tablespoon milk until combined. Chocolate batter will be thick.
Spoon 1 Tablespoon of vanilla batter into each cupcake liner. Top with a spoonful of chocolate batter then more vanilla batter on top until all batters have been used up. At this point you may swirl the batters together very lightly