You will love the tasty flavors in this Monterey spaghetti! Tender spaghetti baked in a cheesy mixture and loaded with spinach and crispy fried onions. It's a surprisingly delicious combination of flavors and an easy weeknight dinner!
Break the spaghetti in half and cook it according to the package directions until it is al dente. Drain and set aside.
Preheat the oven to 350 degrees fahrenheit and spray a 9X13 baking dish with cooking spray.
In a large bowl, whisk together the monterey jack cheese, ½ cup parmesan cheese, sour cream, ricotta cheese, egg, salt, pepper, and garlic powder.
Add the spinach, 3 ounces of the crispy fried onions, and cooked spaghetti to the cheese mixture. Toss thoroughly and combine the ingredients.
Cover with foil and bake for 30 minutes. After 30 minutes, spread the remaining fried onions and parmesan cheese on top of the spaghetti. Bake for an additional 5-8 minutes until the top is golden brown and crispy.
Remove from the oven and let it rest for at least 5 minutes before serving.