Monterey Chicken Spaghetti Cheesy Chicken Spaghetti May 30, 2025 by admin ADVERTISEMENT uncovered for 40 to 50 minutes, until the casserole is hot and bubbly and the onions are golden brown. Prep Time: 15 minutes | Cook Time: 50 minutes | Total Time: 1 hour 5 minutes Servings: 8 servings ADVERTISEMENT ←PreviousNext→