Cheesy Chicken Tetrazzini - comfort food at its best! Chicken and spaghetti baked in a homemade cheese sauce. So easy to make and the whole family loved it! Chicken, spaghetti, butter, flour, milk, cheddar cheese, cream of chicken soup, garlic powder, Worcestershire sauce, salt, and pepper. Can add bell pepper, pimentos, green peas, or spinach to the casserole. Can make in advance and freeze for later. #casserole #chicken #spaghetti #cheddarcheese
Preheat oven to 350ºF. Lightly spray a 9x13-inch baking dish with cooking spray.
Cook spaghetti according to package directions. Drain.
In a saucepan, melt butter over medium heat. Whisk in flour and cook 1 minute. Slowly whisk in milk and cook until it starts to thicken, 3 or 4 minutes. Remove from heat.
Stir in 3/4 cups cheddar cheese, cream of chicken or mushroom soup, garlic powder, salt, pepper, and Worcestershire sauce.
Add chicken and cooked spaghetti to cheese sauce and mix well.
Transfer spaghetti mixture to prepared baking dish. Sprinkle with remaining 1/2 cup cheddar cheese.
Bake for 30 to 40 minutes.
Can use any cheese in place of cheddar cheese.Can add bell pepper and 1 (4-oz) jar diced pimentos, drained to spaghetti mixture.Can add frozen green peas or spinach too spaghetti mixture.Can prepare through Step 6 and freeze for later.To bake after freezing, thaw completely and bake as directed above.