Chocolate Peanut Butter Cake

1 pkg Devil's Food Cake Mix
1 1/3 cups water
1/2 cup vegetable oil
3 large eggs
1 tub Chocolate Frosting
1/2 cup creamy peanut butter
1/2 cup chopped peanuts

Preheat oven to 350 degrees. Grease and lightly flour two 9-inch round cake pans. Combine cake mix, water, oil, and eggs in large mixing bowl.

Beat at low speed with electric mixer until moistened. Beat at medium speed for 2 minutes. Pour into prepared pans.

Bake 30 to 33 minutes or until toothpick inserted in center comes out clean. Cool in pans 15 minutes; remove from pans, cool completely.

Mix frosting and peanut butter in small bowl until smooth. Fill and frost cake. Sprinkle with peanuts. Makes 12 to 16 servings.