Pot Roast Casserole Recipe - BettyCrocker.com

Ingredients

• 1/4 cup plus 1 tablespoon butter
• 1 cup chopped onions
• 2 medium carrots, cut into 1/4-inch slices (1 cup)
• 2 medium stalks celery, cut into 1/4-inch slices (1 cup)
• 1 package (15 oz) refrigerated, fully cooked beef pot roast (about 1 1/2 cups)
• 4 cups boiling water
• 1 cup milk
• 2 boxes (4.7 oz each) Betty Crocker™ au gratin potatoes