Cheese Sauce

Cheese Sauce

2 Tbs. Butter
2 Tbs. Flour
Note: if you want thicker sauce use 4 Tbs. Of butter and 4 Tbs. Flour
1 tsp. Salt
2 cups milk
1/2 tsp. Dry mustard
1 cup shredded cheese
Melt butter in 1 quart glass casserole in a microwave. Add flour and salt, blend to a smooth paste. Add milk gradually, stirring constantly.
Cook uncovered in microwave 4 minutes (or until thickened); stir after 2 minutes, then at the end of each 30 seconds.
Add dry mustard and cheese, mix. Cook uncovered in microwave for 1 minute, then stir.