Name: Ultimate Marble Cupcakes
Prep time: 30 min
Cook time: 20 min
Total time: 3 h
Yield: 14 cupcakes
Ingredients: 1 and 2/3 cups (210g) all-purpose flour (spoon & leveled); 1/2 teaspoon baking powder; 1/4 teaspoon baking soda; 1/2 teaspoon salt; 1/2 cup (115g) unsalted butter, melted; 1 cup (200g) granulated sugar; 1 large egg, room temperature; 3/4 cup + 1 Tablespoon (195ml) milk, divided*; 2 teaspoons pure vanilla extract; 1/4 cup (21g) unsweetened natural cocoa powder; 1 and 3/4 cups (210g) confectioners' sugar; 1/4 cup (21g) unsweetened natural cocoa powder; 1/2 cup (115g) unsalted butter, softened to room temperature; 2 Tablespoons (30ml) heavy cream or half-and-half*; 1 teaspoon pure vanilla extract; salt, to taste; 1/2 cup (115g) unsalted butter, softened to room temperature; 1 and 3/4 cups (210g) confectioners' sugar; 1 teaspoon pure vanilla extract; salt, to taste