Potato Casserole - cooking recipe

Ingredients

5 lb. bag red potatoes
2 sticks butter or margarine
3 beef bouillon cubes
3 c. boiling water
3 Tbsp. flour (to thicken)
3 Tbsp. prepared mustard
1 onion, chopped

Preparation

Boil potatoes in jackets until cooked.
Peel and rinse.
Cut into quarters or smaller if preferred.
Place in casserole dish.