Mounds Candy Bar Cake 1 baked chocolate cake of your choice While cake is baking, prepare toppings. First Topping 1 cup milk 24 large marshmallows 1 cup granulated sugar 1 (14 ounce) package coconut Heat until dissolved, then add coconut. Second Topping 1 1/2 cups granulated sugar 1/2 cup milk 1/2 cup (1 stick) butter 1 1/2 cups semisweet chocolate chips Heat sugar, milk and butter until boiling. Add chocolate chips; stir until dissolved. While cake is hot, spread coconut mixture over cake, then chocolate topping over the coconut.