Ingredients
For the Cake:
1 box (18.25-ounces) chocolate cake mix
For the Filling:
1¼ cups whole milk
5 tablespoons all-purpose flour
1 cup granulated sugar
½ cup salted butter
½ cup vegetable shortening
For the Icing:
3 cups powdered sugar
½ cup salted butter, melted and cooled to room temperature
3 ounces semisweet chocolate, melted and cooled slightly
2 tablespoons whole milk
2 tablespoons hot water
1 teaspoon vanilla extract
Preparation
