Chocolate Cream Cake

1 package chocolate cake mix, dark or devil's food
3 cups heavy cream
3/4 cups sugar
3/4 cup Hershey's cocoa, unsweetened powder

Prepare cake mix according to directions. Pour 1/2 mix into 1 greased 9 inch cake pan. Use other half of mix for cupcakes or another cake. Allow cake to cool completely. With serrated knife, cut cake horizontally into 2 layers. In large bowl with mixer at medium speed, beat heavy cream, 3/4 cup cocoa and 3/4 cup sugar until stiff peaks form. Meanwhile, place bottom cake layer, cut side up, on cake plate. Spread with some chocolate cream filling. Place other layer top side up on top of cream. Frost cake with chocolate cream filling. Spoon some cream into decorating bag to decorate top of cake, if desired

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