There is something about an old-fashioned chicken casserole that feels just right when the weather turns cool, and this oven baked 4-ingredient chicken a la king casserole has that same cozy spirit so many Midwestern kitchens were built on. It is the kind of practical supper a mother or grandmother could put together from pantry staples and a little leftover chicken, yet it still comes to the table looking special with its creamy sauce, mushrooms, and those bright red pimientos that give it such a familiar vintage charm.
This casserole is rich and comforting all on its own, but it is especially good with buttered toast points, flaky biscuits, or spooned over rice, mashed potatoes, or egg noodles to catch every bit of the sauce. For vegetables, simple green beans, peas, or a crisp lettuce salad make a nice contrast to the creamy filling, and if you are serving it for a Sunday supper, a dish of cranberry sauce on the side has a sweet-tart note that suits it beautifully.
Oven Baked 4-Ingredient Chicken a la King Casserole
Servings: 6
Ingredients
3 cups cooked chicken, cut into bite-size chunks
2 cans (10.5 ounces each) condensed cream of mushroom soup
1 jar (4 ounces) diced pimientos, drained
1 can (4 ounces) mushroom stems and pieces, drained
Directions
1. Heat the oven to 350 degrees Fahrenheit and lightly grease an oval or 2-quart baking dish.
2. In a large mixing bowl, stir together the cooked chicken, condensed cream of mushroom soup, drained pimientos, and drained mushrooms until everything is evenly coated in the creamy sauce.
3. Spoon the mixture into the prepared baking dish and spread it into an even layer.
4. Bake uncovered for 30 to 35 minutes, until hot and bubbling around the edges.
5. Let the casserole rest for 5 to 10 minutes before serving so the sauce can settle slightly, then spoon onto plates or serve over toast, rice, or noodles.
Variations & Tips
Serve It Over Something Starchy: This casserole is quite rich, so I nearly always serve it over toast points, rice, biscuits, or egg noodles. Stretching it this way also helps a small pan feed a few more people around the table.
Add a Little Seasoning: If your family likes a bit more flavor, a small pinch of black pepper, onion powder, or celery salt can be stirred in with the soup. The original four-ingredient version is mild and true to those old pantry casseroles, but a tiny touch of seasoning does no harm.
Use Leftover Turkey: Around the holidays, this is a fine way to use cooked turkey in place of chicken. It keeps the same creamy, old-time flavor and feels right at home on a cool evening.
Make It Ahead: You can mix everything together earlier in the day, cover the dish, and refrigerate it until supper time. If baking straight from the refrigerator, add a few extra minutes so the center gets fully hot.
Don’t Overbake: Since the chicken is already cooked, the goal is simply to heat the casserole through and let it bubble. Too much time in the oven can tighten the meat and make the sauce thicker than you want.