Jack's Favorite Casserole

Ingredients

• 1 cup butter
• 1/2 pound angel hair pasta, uncooked
• 2 cups instant rice
• 2 cans onion soup
• 1, 8 ounce can water chestnuts, drained and sliced
• 2 cans chicken broth
• 1 teaspoon soy sauce
• 1 cup water