01 -
Boil spaghetti in a large pot of salted water until al dente as indicated on package instructions. Drain thoroughly.
02 -
In a medium bowl, beat the egg. Add chopped chicken, sour cream, condensed cream of chicken soup, Parmesan, Monterey Jack, well-drained spinach, half of the French fried onions, garlic, and onion powder. Mix until fully combined.
03 -
Fold drained spaghetti into the chicken and spinach mixture, ensuring even coating.
04 -
Grease a 23 x 33 cm baking dish lightly. Spread the mixture evenly in the dish and cover tightly with foil.
05 -
Bake in a preheated oven at 175°C for 30 minutes.
06 -
Remove foil, scatter the remaining French fried onions evenly over the surface, and return to the oven for 5 minutes until golden and crisp.
07 -
Let the dish rest for 5 minutes before serving hot.