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Monterey Chicken Spaghetti

This Monterey Chicken Spaghetti is a creamy, cheesy, and comforting casserole loaded with tender chicken, Monterey Jack cheese, and a crispy French Fried Onion topping. Made with simple ingredients like sour cream, cream of chicken soup, and spinach, it’s a family-friendly meal perfect for weeknights, potlucks, and meal prep.

Ingredients

Scale

12 ounces dried spaghetti
4 cups chopped cooked chicken
1 (16-ounce) container sour cream
2 (10.5-ounce) cans unsalted cream of chicken soup
1 (10-ounce) package frozen spinach, thawed and drained
2 cups shredded Monterey Jack cheese, divided
2 garlic cloves, minced
1 (6-ounce) can French’s French Fried Onions, divided

Instructions

Preheat the Oven: Heat your oven to 350°F. Lightly spray a 9×13-inch baking dish with cooking spray.
Prepare the Pasta: Cook the spaghetti according to package directions until al dente. Drain and set aside.
Mix Ingredients: In a large bowl, combine the cooked chicken, cream of chicken soup, sour cream, drained spinach, 1 cup of Monterey Jack cheese, minced garlic, and half a can of French Fried Onions.
Combine Pasta and Mixture: Stir the cooked spaghetti into the chicken mixture. Pour the combined mixture into the prepared baking dish.
Add Toppings: Sprinkle the remaining Monterey Jack cheese over the pasta. Top with the rest of the French Fried Onions.
Bake: Place in the oven and bake uncovered for 40 to 50 minutes, until the casserole is hot and bubbly and the onions are golden brown.

Notes

Make-Ahead Friendly: Assemble the casserole a day in advance and store it in the fridge until ready to bake.
Perfect Texture: Cook the pasta al dente so it doesn’t become mushy when baked.
Customizable: Swap out ingredients to fit your preferences—use different cheeses, add spice, or make it gluten-free.
Freezer-Friendly: Freeze unbaked or fully cooked portions for up to 3 months for easy meal planning.
Best Topping: For extra crunch, add French Fried Onions in the last 15 minutes of baking to prevent burning.

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