Prepare (cook) brownies in 13x9 pan. Prick top of cooked brownies at 1 inch intervals, then drizzle with the 1/2 cup Kahlua. Let cool completely. Crumble. Prepare pudding mixes. Place 1/3 of crumbled brownie in bottom of 3 quart trifle dish. Top with 1/3 of the pudding 1/3 of the whipped topping, followed by 1/3 of the crushed candy bar mix. Repeat layers twice with remaining ingredients, ending with whipped topping and crushed bars. Chill for 8 hours, makes 12 to 18 servings.