Line bottoms with waxed paper. 5. Place the peanut cream in the mold and smooth it out using a spatula. Make cake: Preheat oven to 350°F. Preparation. Grease three 8-inch-diameter cake pans with 1 1/2-inch-high sides. Sift over the icing sugar and yeast. Add the powdered sugar and grate a whole Snickers into the bowl. Then cover everything with the second part of the cake and refrigerate for 1 hour. Mix everything with an electric mixer. 6.