Tuna Casserole

Directions

1. 1
   Chop onion and green pepper coarsely.
2. 2
   Cook in butter until limp.
3. 3
   Stir in flour as smoothly as possible.
4. 4
   Add milk. Gradually season with salt and pepper.
5. 5
   Cook, stirring constantly, until mixture bubbles.
6. 6
   Stir in tuna.
7. 7
   Pour into a shallow baking dish.