pretzels. In a small saucepan over low heat, melt butter. Add brown sugar; cook and stir until dissolved. Pour over cereal mixture; stir to coat. Place a third on a greased 15x10x1" baking pan. Bake at 325 degrees for 8 minutes; stir and bake for 6 minutes more. Spread on waxed paper to cool. Repeat with remaining mixture.