Chicken Gloria Casserole

Cheese Alternatives: Use Gruyère, Fontina, or cheddar for a different flavor profile
Chicken Substitute: Try turkey breast or even boneless pork chops
Vegetable Add-ins: Spinach, asparagus, or peas can be mixed into the sauce
Low-Sodium Option: Use low-sodium cream of mushroom soup and reduce added salt
Gluten-Free Version: Replace flour with almond flour or a gluten-free blend

Serving Suggestions:
Serve this casserole over buttery mashed potatoes, egg noodles, or a bed of rice to soak up the creamy sauce. Pair with a crisp green salad, roasted vegetables, or garlic bread for a complete, comforting meal.

Make Ahead + Storage Tips:
This casserole can be prepared a day in advance. Assemble the chicken and mushroom sauce in the baking dish, cover tightly, and refrigerate. When ready, bake as directed, adding 5–10 minutes to ensure it’s heated through. Leftovers store well in an airtight container in the refrigerator for 3–4 days. Reheat in the oven at 350°F for 15–20 minutes or in a microwave, then briefly broil the cheese layer for a fresh-baked look.

Cultural or Historical Notes:
Chicken Gloria Casserole has roots in classic American comfort cuisine, combining simple, readily available ingredients into a dish that feels elegant without fuss. The addition of sherry and Swiss cheese gives it a slightly European flair, reminiscent of mid-century casseroles often served for special family gatherings. Its combination of creamy, cheesy, and savory flavors has made it a beloved staple at potlucks and Sunday dinners across the U.S.

Frequently Asked Questions (FAQ):
Can I use frozen chicken for this casserole?
Yes, but thaw completely first for even cooking and better browning.

Can I make this gluten-free?
Absolutely. Replace the flour with almond flour or a gluten-free all-purpose blend.

How do I prevent the cheese from burning?
Keep a close eye during the broil step—1–2 minutes is usually sufficient. Move the dish to a lower oven rack if needed.

Can I freeze leftovers?
Yes, freeze in an airtight container for up to 2 months. Thaw in the refrigerator overnight and reheat covered at 350°F until warmed through, then broil briefly if desired.