Brookie Sundae: Make brownie mix according to box. Stir until most bumps are out. Pour brownie mix into greased pan. Add cookie dough on top of brownie mixture. Drizzle hot fudge on top. Add some sprinkles. Bake for about 35-40 mins. Cherry on top! White Chocolate Raspberry: Make brownie mix according to box. Pour brownie mix into greased pan. Add cookie dough on top of brownie mixture. Add white chocolate chips. Add raspberry jam/preserves. Bake for about 35-40 minutes. Marshmallow Fluff: Make brownie mix according to box. Pour brownie mix into greased pan. Add cookie dough on top of brownie mixture. Drizzle marshmallow fluff.