"Boston Cream Pie Cupcakes, small batch...."
INGREDIENTS
•
4 tablespoons unsalted butter, softened
•
1/4 cup granulated sugar
•
1 teaspoon vanilla extract
•
1 large egg white, at room temperature
•
2 tablespoons sour cream, at room temperature
•
6 tablespoons flour
•
1/2 teaspoon baking soda
•
pinch of fine salt
•
1 batch of pastry cream OR 1 box instant vanilla pudding with 1 1/2 cups cold milk
•
2 ounces unsweetened chocolate, chopped
•
4 tablespoons unsalted butter, softened
•
1 1/2 cups powdered sugar
•
1 tablespoon sour cream
•
1/4 cup cocoa powder