Ingredients

The following ingredients have 4 Servings
  • 2 cups all-purpose flour
  • 1 1/2 cups granulated sugar
  • 1/2 cup light brown sugar (, packed)
  • 3/4 cup unsweetened cocoa powder
  • 2 teaspoons baking powder
  • 1 1/2 teaspoons baking soda
  • 3/4 teaspoon salt
  • 3/4 cup oil (, canola or vegetable)
  • 2 eggs
  • 1 teaspoon vanilla extract
  • 6 Tablespoons milk
  • 1/3 cup sour cream
  • 1 cup boiling water
  • 10.5 ounce package mini marshmallows
  • 1/2 cup butter ((1 stick))
  • 6 Tablespoons milk
  • 3 heaping Tablespoons unsweetened cocoa powder
  • 1 teaspoon vanilla extract
  • 3 cups powdered sugar

Instruction

  • Preheat oven to 350 degrees F. Lightly grease a 9x13'' baking pan.
  • In a large mixing bowl combine the flour, sugars, cocoa powder, baking powder, baking soda and salt.
  • Add oil, eggs, vanilla, milk and sour cream and mix until combined. Reduce speed and carefully pour in the boiling water. Beat on high speed for 1 minute to add air to the batter.
  • Pour batter into prepared pan. Bake for 28-33 minutes, or until a toothpick inserted in the center comes out clean.
  • Remove cake from oven and sprinkle marshmallows all over the top of the hot cake, completely covering it. 
  • Return to oven (at 350 degrees F) for 2-3 minutes or until the marshmallows are just slightly puffed and melted. 
  • Allow cake to cool completely before drizzling frosting on top.