2  tablespoons olive oil
2  tablespoons flour
1/4  teaspoon salt
1/8  teaspoon pepper
1  cup skim milk

Heat oil in 1-1/2 quart saucepan over low heat.   Stir in flour, salt and pepper.  Cook over low heat, stirring constantly, until mixture is smooth and bubbly; remove from heat.  Stir in milk.  Heat to boiling, stirring constantly.  Boil and stir 1 minute.  Yield-1 cup sauce.