Turkey-Potato Casserole - cooking recipe

Ingredients

1 (5.5 oz.) pkg. au gratin potatoes
4 c. boiling water
1 tsp. salt
1 Tbsp. margarine, melted
1/4 c. grated Parmesan cheese
1 (10 oz.) pkg. frozen chopped broccoli, thawed
1 medium stalk celery, sliced
1 medium onion, chopped
2 Tbsp. margarine
1 1/2 c. milk
1/4 tsp. dry mustard
2 1/2 c. cut-up cooked turkey or chicken
1/2 c. shredded Cheddar cheese

Preparation

Grease square pan.
Cover potatoes with boiling water in 2 1/2-quart bowl; stir in salt.
Let stand, uncovered, 15 minutes; drain.
Toss potatoes with melted margarine and the Parmesan cheese.
Press potato mixture in bottom of dish; top with broccoli.
Heat oven to 375\u00b0.