Name: Yellow Cupcakes with Nutella Buttercream Frosting
Yield: 1 dozen cupcakes
Ingredients: For the Yellow Cupcakes:; 5 1/2 tablespoons unsalted butter, at room temperature; 3/4 cup + 2 tablespoons granulated sugar; 1 large egg + 1 egg yolk, at room temperature; 1 teaspoon Vanilla Extract; 1 1/4 cups all-purpose flour; 1 1/4 teaspoons baking powder; 1/2 teaspoon salt; 1/2 cup sour cream (I used Full-fat); 2 tablespoons milk (I used whole); For the Nutella Buttercream:; 8 tablespoons unsalted butter, at room temperature; 2 cups powdered sugar, plus more if needed to reach a thicker consistency; 2 1/2 tablespoons heavy cream; Scant 1/2 cup cocoa powder; 1/4 cup Nutella; Colored sprinkles, optional