Gram's Mac & Cheese

Why I Love This Recipe
Ingredients You'll Need
2 cups cooked elbow macaroni
3 tbl margarine
1/2 tsp mustard
1 tbl flour
1 lb velveta
2 cups milk
1/4 cup grated parm cheese
3 or so pieces of whtie bread, cubed and spread with margarine
Directions
Melt cheese in microwave, then put in pot on medium heat. Add margarine, mustard, flour and milk. When all melts add grated cheese. Add to cooked macaroni in pan. Spread cubed bread over top, bake 30 minutes.