This is to die for! My daughter brought this to our family reunion. Instead of liquor, she used Almond Extract and she used Heath bars. It was a hugh hit and now she has to send all of her cousins a copy of the recipe. LOL. She didn't give me the prep and cook time. But the cook time would be according to package directions on the brownie mix. Prep time approximately 9 hours (includes 8 hours for chilling).