Mix cake mix, shortening, and eggs together. ... completely. Cream together frosting ingredients. Spread between cookies. NOTE: ... in foil and freeze.
Preheat oven to 350 degrees. ... or 9") round cake pans. Combine all ingredients except Oreos; mix at low speed ... creamy. Fill and frost cake. Garnish with Oreos.
Heat oven to 350 degrees. ... large bowl, combine cake mix, water, oil and egg ... sugar gradually until frosting is smooth and creamy. Frost top of cake. Sprinkle some ... on top of cake.