Combine all ingredients in a large bowl in the order they are written. Stir together, then beat until smooth. Spoon batter evenly into 4 greased 6" round pans. Bake at 375 for 20-25 minutes or until the sides begin to pull away. Allow to cool completely before removing from the pan.

Combine all ingredients in a mixing bowl. Mix well, then whip until fluffy.

In a small saucepan, bring cream just to a boil. Pour over chocolate and whisk until smooth.

Melt candy melts or almond bark in a double boiler or microwave. Meanwhile, line a sheet tray with a silpat or parchment paper. Once melted, pour the bark over the lined pan and allow to spread evenly. Decorate with contrasting color candy melts, sprinkles, or additional candy. Allow to cool completely, then strike the center of the candy with a spoon until it begins to crack.

Frost the top of a brownie layer with peanut butter frosting, then stack with the next brownie layer and repeat. On the top layer, drizzle the ganache, allowing it to spill over the sides slightly. Push decorations into the ganache, starting with the bark, then adding other large items, and using piped frosting as glue for small items.