Chocolate-Peanut Butter Cake With Cream Cheese and Butterfinger Frosting

Chill uncovered overnight.

Preheat oven to 350°F.

Butter three 9-inch-diameter cake pans with 1 1/2-inch-high sides.

Line bottoms with parchment paper.

Sift first 4 ingredients into medium bowl.

Using electric mixer, beat butter and peanut butter in large bowl until blended.

Beat in sugar.

Beat in eggs, 1 at a time, then vanilla.

At low speed, beat in flour mixture in 4 additions alternately with buttermilk in 3 additions.

Divide batter among pans and spread evenly.

Bake cakes until tester inserted into center comes out clean, about 25 minutes.

Cool cakes 5 minutes.

Turn out onto racks; peel off parchment.

Cool cakes completely.

Using electric mixer, beat cream cheese, 1 1/4 cups powdered sugar, butter, and vanilla in large bowl to blend.

Whisk whipping cream and 3/4 cup powdered sugar in bowl until mixture holds medium-firm peaks.

Fold into cream cheese mixture in 3 additions; chill until firm but spreadable, about 1 hour.

Place 1 cake layer, bottom side up, on 9-inch tart pan bottom.

Spread with half of filling.

Place another layer, bottom side up, on work surface.

Spread with remaining filling; place atop first layer.

Top with remaining cake layer, bottom side up.

Spread frosting over top and sides of cake. (Can be made 1 day ahead.

Cover with cake dome; chill.

Let stand at room temperature 2 hours before continuing.) Press candy and peanuts onto top of cake.