1-Getting started: with this Creamy Spinach Chicken Casserole is simple and fun, beginning with preheating your oven. Set it to 500°F and lightly spray a 13 x 9-inch baking dish to prevent sticking. This high heat helps everything cook quickly while keeping the chicken juicy.

2-Next, mix up the creamy sauce in a bowl by combining 1/2 cup mayonnaise, 1/2 cup sour cream (or yogurt as a substitute), 1/2 cup grated parmesan cheese, 1/2 tsp ground black pepper, and 1 tsp garlic salt. Stir until smooth for that rich base. For variations, think about adding ingredients like mushrooms or bacon at this stage if you’re experimenting.

3-Pack the baking dish with 8 oz fresh spinach, then lay 1 lb uncooked chicken breasts over it these should be 2 breasts cut in half crosswise to make 4 fillets for even cooking. Spread the creamy sauce evenly over the chicken and top with 8 oz shredded Monterey Jack cheese. Bake on the bottom rack for 20-25 minutes until the spinach wilts and the chicken hits 165°F inside. Let it rest a bit before serving to lock in the flavors. This method ensures a quick, 30-minute total time for a hearty meal. Learn more about cooking tender chicken for the best results.