1. Melt margarine in sauce pan. 2. stir in flour and salt. 3. cook 1 minute. 4. stir in milk. 5. heat on medium heat stirring constantly until mixture starts to thicken - coats spoon. 6. remove from heat. 7. add 1 1/2 cup cheese stir in until melted. 8. stir in cooked macaroni. 9. fold into sprayed 9 x 13 baking pan. 10. top with remaining cheese. 11. back at 375 for 20-25 min until bubbly.
