Peel and slice potatoes. Add sliced onion. Cook until tender.
Sauce: Melt margarine, add flour and seasoning. Stir until combined. Add milk and cook until smooth, stirring constantly. Pour over the potatoes and onions.
Peel and slice potatoes. Add sliced onion. Cook until tender.
Sauce: Melt margarine, add flour and seasoning. Stir until combined. Add milk and cook until smooth, stirring constantly. Pour over the potatoes and onions.