Depression Casserole

Directions

1. 1
   In a saucepan, saute onion in oil until tender.
2. 2
   Stir in ketchup, water, vinegar, mustard and pepper.
3. 3
   Bring to a boil, stirring occasionally.
4. 4
   Place frankfurters in a 1-quart baking dish.
5. 5
   Pour sauce over it.
6. 6
   Bake, uncovered, at 375° for 30 minutes or until bubbly.
7. 7
   Serve over toast or rice.