Turkey (or Chicken) Tetrazzini

I changed a few things, but here is a link to the original recipe:
http://allrecipes.com/Recipe/Chicken-or-Turkey-Tetrazzini/Detail.aspx

Ingredients:
12 ounces spaghetti
1 1/2 teaspoons vegetable oil
1/2 teaspoon salt
1 1/2 tablespoons butter
1/4 cup chopped onion
1 clove garlic, minced
1 (10.75 ounce) cans condensed cream of mushroom soup
1 (10.75 ounce) cans condensed cream of chicken soup
1 cup chicken broth
1 teaspoon seasoning salt
3 cups shredded American cheese
4 cups cooked and cubed turkey or chicken
1 small can of peas

1. Preheat oven to 350 degrees F.
2. Cook spaghetti according to package directions, add oil and salt to cooking water. Drain.
3. In large saucepan or Dutch oven over medium heat, melt butter. Add onion and garlic. Cook, stirring occasionally, 2 minutes. Add soup, broth, seasoned salt and 1 1/2 cups of the cheese. Cook and stir until cheese melts and mixture is smooth. Add spaghetti , peas, and chicken or turkey. Mix well. Transfer to 9x13 baking dish. Cover with foil. (At this point you can put in the fridge for later or divide and freeze)
4. Bake at 350 degrees F for 30 minutes or until hot and bubbly.  If it has been refrigerated, it takes about an hour to warm through.
5. Remove foil. Sprinkle with remaining 1 1/2 cups. cheese. Continue baking 2 minutes or until cheese melts.