Death By Chocolate
["1 (19.8 oz.) box fudge brownie mix", "1/4 to 1/2 c. coffee liqueur", "3 (3.5 oz. each) pkg. instant chocolate mousse", "8 toffee candy bars (Skor or Heath)", "12 oz. whipped topping, thawed"]
["Bake brownies according to package directions; let cool. Prick holes in top of cooled brownies and pour the coffee liqueur over brownies; set aside.", "Prepare chocolate mousse according to package directions.", "Break candy bars into small pieces.", "Break up half of brownies into small pieces and put in bottom of a large glass bowl or trifle dish.", "Cover with half the mousse, then half the candy, then half the whipped topping.", "Repeat layers with the remaining ingredients."]
["brownie mix", "coffee liqueur", "instant chocolate mousse", "toffee", "whipped topping"]