Baked Ravioli and Cheese 1 (50-count) package frozen cheese ravioli 2 tablespoons butter or margarine 2 tablespoons flour 2 cups milk 1 1/2 cups cubed American cheese 3/4 cup crushed potato chips (optional) Cook ravioli according to package directions; drain. Meanwhile, for sauce, melt margarine in a large saucepan. Stir in flour. Add milk; cook and stir until slightly thickened and bubbly. Add cheese; heat and stir until cheese is melted. Salt and pepper to taste. Add cooked ravioli; stir gently. Spoon into an 8-inch square baking dish. Sprinkle crushed potato chips over. Bake at 350 degrees F for 15 to 20 minutes or until edges bubble and top is golden brown.