Put Nestle Toll House Morsels in a 4 cup microwave-safe glass measuring cup or bowl. Pour Carnation Sweetened Condensed Milk over morsels. Microwave on HIGH for 2-3 minutes or until really bubbly. Remove from microwave immediately and stir in any of the optional ingredients you may like. Pour into a buttered container with a tight fitting lid and let cool. Cut into squares and ENJOY.