This pork chop and onion casserole is one of those unfussy, old-school Midwestern comfort dishes that has probably shown up in church cookbooks and weeknight rotations for decades. At its core, it’s simply seasoned pork chops nestled into a bed of sweet, slowly softening onions, all baked together until the meat is tender and the onions are jammy around the edges. Dishes like this grew out of a practical need: stretch a few chops into a full family meal using pantry staples and the reliable heat of the oven. You might want to make this when you’re craving something cozy and familiar but don’t want a long ingredient list or complicated prep—just five ingredients, a single baking dish, and the kind of aroma that makes everyone wander into the kitchen asking when dinner will be ready.
This casserole pairs beautifully with simple, starchy sides that soak up the oniony pan juices. Mashed potatoes or buttered egg noodles are classic companions, but a pot of steamed rice works just as well if that’s what you keep on hand. For a bit of color and freshness, add a crisp green salad with a sharp vinaigrette or some roasted green beans or broccoli on the side. If you’re leaning into full comfort mode, warm dinner rolls or a crusty baguette are perfect for sopping up every last bit of sauce from the bottom of the baking dish.
5-Ingredient Oven-Baked Pork Chop & Onion Casserole
Servings: 4 servings
Ingredients
4 bone-in pork chops (about 1-inch thick, 2 to 2 1/2 pounds total)
2 large yellow onions, peeled and thinly sliced into half-moons
2 tablespoons olive oil (or other neutral cooking oil)
1 teaspoon kosher salt (plus more to taste)
1 teaspoon freshly ground black pepper (plus more to taste)
Directions
Preheat your oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish or similar casserole with a bit of the olive oil.
Prep the onions: Slice the onions into thin half-moons. Spread them evenly over the bottom of the prepared baking dish. Drizzle with 1 tablespoon of the olive oil and season with about 1/2 teaspoon of the salt and 1/2 teaspoon of the pepper. Toss gently with your hands or a fork so the onions are lightly coated and evenly seasoned.
Season the pork chops: Pat the pork chops dry with paper towels; this helps them brown and keeps the seasoning from sliding off. Rub both sides of each chop with the remaining 1 tablespoon olive oil, then sprinkle the remaining 1/2 teaspoon salt and 1/2 teaspoon pepper evenly over both sides.
Arrange the casserole: Lay the seasoned pork chops directly on top of the sliced onions in a single layer. The chops should be nestled into the onions but not stacked on top of each other.
Bake uncovered: Place the baking dish on the center rack of the preheated oven. Bake for 25–30 minutes, or until the pork chops reach an internal temperature of 145°F (63°C) when checked with an instant-read thermometer inserted into the thickest part of a chop (avoiding the bone). The onions should be soft and lightly browned around the edges.
Optional brief broil: If you’d like a bit more color on the chops, switch the oven to broil for 2–3 minutes at the end of baking, watching closely so they don’t overcook. Remove the dish from the oven and let the pork chops rest in the casserole for about 5 minutes; this allows the juices to redistribute and the onions to settle into a soft, saucy layer.
