Creamed Chicken over Rice

A most delicious way to use up leftover chicken.

1 Tbsp margarine, melted
1 Tbsp flour
1 c milk
2 c chicken, cooked

Stir flour in margarine until smooth. Add milk. Stir. Microwave on high for 2 minutes then stir sauce. Continue microwaving until sauce is desired thickness.  Cut up chicken into smaller pieces. Add to sauce. Serve over rice.