My mother in law brought this 4 ingredient Sunday classic over and the whole family begged for her secret

This oven baked 4-ingredients beef and potato roast is exactly the kind of Sunday classic my Midwestern mother-in-law is famous for. It’s built on simple pantry staples but tastes like you fussed all afternoon: meltingly tender pulled chuck roast, baby potatoes that soak up the juices, and a rich brown gravy that forms right in the pan. She’s been making versions of this since the late 1970s, when convenience soups were the shortcut of choice, and it remains the dish everyone requests when the whole family gathers. With just beef, potatoes, onion soup mix, and cream of mushroom soup, it’s an easy, practical recipe that delivers the kind of comfort food people remember.

Serve this beef and potato roast straight from the glass casserole dish at the center of the table so everyone can scoop out tender shreds of beef, golden potatoes, and plenty of gravy. It pairs well with a simple green vegetable—steamed green beans, roasted Brussels sprouts, or a crisp salad with a tangy vinaigrette to cut through the richness. A basket of crusty bread or warm dinner rolls is ideal for mopping up the savory brown gravy. If you’d like something extra, a side of buttered peas or glazed carrots keeps the meal firmly in that cozy Sunday-supper lane.

Servings: 6

3 pounds beef chuck roast, trimmed of excess hard fat

Preheat your oven to 300°F (150°C). Lightly grease a 9x13-inch glass casserole dish to help prevent sticking and make cleanup easier.

Place the beef chuck roast in the center of the glass casserole dish. If the roast is very thick, you can cut it into two large pieces so it cooks more evenly and shreds easily.

Scatter the baby potatoes all around the beef in a single, fairly snug layer. Keeping them close to the meat helps them braise in the juices and brown lightly on top.

In a medium bowl, whisk together the condensed cream of mushroom soup and the dry onion soup mix until the mixture is mostly smooth and evenly combined. The onion soup mix will season both the meat and potatoes and help create a rich brown gravy.

Pour the soup mixture evenly over the beef and potatoes, using a spatula to spread it so the top of the roast is coated and most of the potatoes are at least lightly covered. It will look thick at this point; the beef juices will thin it into a savory gravy as it cooks.

Cover the glass casserole dish tightly with a double layer of aluminum foil, crimping the edges well to trap steam. This helps the chuck roast slowly braise until it is fork-tender while the potatoes turn soft and creamy inside.

Bake in the preheated oven for 3 to 3 1/2 hours, or until the beef is very tender and easily pulls apart with two forks and the potatoes are soft when pierced with a knife. If your roast is thicker than 3 pounds, you may need closer to 4 hours.

Carefully remove the foil, watching out for hot steam. Using two forks, gently pull the beef into large shreds right in the casserole dish, mixing it lightly with the surrounding gravy. Turn the potatoes in the sauce so their tops get coated and lightly browned spots are visible.

Return the uncovered dish to the oven for 10 to 15 minutes to let the top of the beef and potatoes take on a bit more color and allow the gravy to slightly thicken. This step also gives you that homey, rustic look with tender pulled beef nestled among golden potatoes in a glossy brown sauce.

Taste a spoonful of the gravy and adjust seasoning if needed with a small pinch of salt or freshly ground black pepper. Serve the beef and potatoes hot straight from the glass casserole dish, making sure everyone gets plenty of the rich brown gravy spooned over the top.

Because this is a four-ingredient classic, I like to keep the base recipe simple and then adjust around the edges. If you want a deeper, roastier flavor, sear the chuck roast in a hot skillet with a splash of oil until browned on both sides before placing it in the glass casserole dish—this adds a few minutes but builds more flavor without adding ingredients. For a slightly looser gravy, whisk in 1/4 to 1/3 cup water to the soup mixture before pouring it over the meat and potatoes; the beef will still contribute plenty of richness. You can also swap baby Yukon Gold potatoes for red potatoes; they hold their shape but become wonderfully creamy. If sodium is a concern, choose a low-sodium cream of mushroom soup and use only half of the onion soup packet, then season to taste at the end. To stretch the meal for a bigger crowd without changing the core four ingredients, serve the pulled beef and potatoes over buttered egg noodles or plain white rice, letting that savory brown gravy soak in. Leftovers reheat well in a covered dish at 325°F until hot, and a splash of water or broth (if you keep it on hand) will loosen the gravy back to its original texture.