Beef Casserole(Ching Delight)

Ingredients

• 1 lb. ground beef
• 1 (10 oz.) pkg. frozen peas, thawed
• 2 c. finely sliced celery
• 1 c. cream of mushroom soup
• 2 Tbsp. cream or half and half
• 1 1/2 tsp. salt
• 1/2 tsp. pepper
• 1 small onion, finely chopped
• 2 c. crushed potato chips