Cheesy Potato Casserole - cooking recipe

Ingredients

7 medium potatoes
1/4 c. butter or margarine
1 small onion, chopped
1 tsp. salt
1/4 tsp. pepper
1 (8 oz.) carton sour cream
1 can chicken soup
2 c. Cheddar cheese, shredded
3 Tbsp. margarine or butter, melted
1 1/2 c. herb dressing mix

Preparation

Cook potatoes until tender.
Drain and cool.
Peel and cut into 1/4-inch strips.
Set aside.