Crunchy Tuna Casserole

Ingredients

• 2 small cans tuna packed in water, drained
• 2 cups celery, diced
• 1/2 cup onion, diced
• 2 cans chow mein noodles
• 6 ounces almonds, blanced and sliced
• 2 cans cream of mushroom soup
• 1 can water
• 3 tablespoons butter, divided