package (about 18 ounces) chocolate cake mix, plus ingredients to prepare mix
1
cup prepared vanilla frosting
1/2
cup peanut butter
1
to 2 tablespoons milk
1
container (16 ounces) chocolate frosting
Chocolate peanut butter cups, chopped (optional)
Peanut butter chips (optional)
1. Preheat oven to 350°F. Spray two 12×1-inch round pizza pans with nonstick cooking spray. Press cookie dough evenly into one pan. Bake 15 to 20 minutes or until edges are golden brown. Cool in pan on wire rack 20 minutes. Remove from pan; cool completely on wire rack.
2. Prepare cake mix according to package directions. Fill second pan one-fourth to half full with batter. (Reserve remaining cake batter for another use, such as cupcakes.) Bake 10 to 15 minutes or until toothpick inserted into center comes out clean. Cool in pan on wire rack 15 minutes. Gently remove cake from pan; cool completely on wire rack.
3. Combine vanilla frosting and peanut butter in small bowl. Gradually stir in milk, 1 tablespoon at a time, until mixture is of spreadable consistency.
4. Place cookie on serving plate. Spread peanut butter frosting over cookie. Place cake on top of cookie, trimming cookie to match the size of cake, if necessary. Frost top and side of cake with chocolate frosting. Garnish with peanut butter cups and peanut butter chips, if desired.
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