Twinky Cake
["1 cake mix, baked as directed on box", "1/4 c. butter", "1/2 to 3/4 c. Pet cream", "1/2 c. Crisco (shortening)", "1 c. granulated sugar", "1 Tbsp. vanilla"]
["Bake cake.", "Let cool.", "Beat other ingredients for 10 minutes. Slice your cake in layers.", "Spread filling on each layer and refrigerate."]
["cake", "butter", "Pet cream", "sugar", "vanilla"]