01 -
Turn on your oven to 350°F (175°C). Lightly coat a 9x13-inch casserole dish with non-stick spray.
02 -
Boil the pasta to al dente following the instructions on the package. Drain out the water, and set aside.
03 -
Mix the chicken, creamy soups, sour cream, garlic, thawed spinach, half the cheese, and half the fried onions in a big bowl.
04 -
Stir the cooked spaghetti into the chicken blend, then move everything into the prepared baking dish evenly.
05 -
Top with the remaining shredded cheese and fried onions. Bake uncovered for 40-50 minutes until golden on the surface and bubbling.