Step 1

Preheat oven to 350°F. Line two 9-inch round pans with parchment paper and spray with non-stick spray.

Step 2

Whisk the flour, sugar, cocoa, baking powder, baking soda, and salt in a large mixing bowl.

Step 3

Whisk in the milk, oil, eggs, and vanilla till smooth. Stir in the boiling water, mixing until smooth.

Step 4

Divide the batter evenly between the two pans. Bake at 350°F for 30-35 minutes or till a toothpick inserted in the center comes out clean.

Step 5

Cool for 10 minutes in the pans, then invert onto cooling racks. Cool completely.

Step 6

Beat all ingredients in a bowl until smooth, adding enough half and half to get a spreadable consistency.

Step 7

Place one cake on a cake stand or serving tray. Spread about one cup of frosting on the top. Place the other cake on top. Frost the sides and top of the cake with the remaining frosting.

Step 8

Serve immediately or cover and let sit overnight.