Basic White Sauce

Ingredients:
2 T. butter or stick margerine
2 T. all-purpose flour
1/4 t. salt
1/8 t. pepper
1 c. milk

Instructions:
Melt butter over low heat. Stir in flour, salt, and pepper. Cook over medium heat, stirring constantly, until mixture is smooth and bubbly; remove from heat.
Gradually stir in milk. Heat to boiling, stirring constantly. Boil and stir 1 minute.
Pour white sauce over cooked vegetables or use in a casserole or other dish.

Source:
Betty Crocker cookbook