Place 28 x 18 inch piece of foil on heat proof surface. Coat with Pam cooking spray. Set aside. In a heavy 12 inch frypan, over medium heat, cook margarine, brown sugar, corn syrup, and molasses, stirring constantly, until mixture starts to boil over entire surface. Cook and stir about 6 minutes longer. Carefully stir vanilla and butter flavoring into hot mixture. Remove from heat. Add Corn pops cereal and quickly and carefully stir to coat cereal. Spread mixture thinly on prepared foil. Separate cereal as it cools. Store in airtight container. Yield: 10 cups.
