This oven baked 3-ingredient old fashioned onion soup beef is the kind of dish that quietly steals the show at a potluck table. My aunt Ruth brought a pan of this to every family reunion out at the church shelter house, and there were never any leftovers—just a blue speckled roaster scraped clean with somebody’s dinner roll. It’s as simple as can be: a good beef roast, dry onion soup mix, and a little something to turn it into rich brown gravy. Everything bakes low and slow until the meat is fork-tender and shreds into the caramelized onions and savory juices. It’s pure Midwestern comfort, the kind of recipe you can put in the oven and forget about while you get on with your day.
Serve this shredded onion soup beef piled onto mashed potatoes, buttered egg noodles, or open-faced on thick slices of white bread so they can soak up all that brown gravy. At reunions, we set the blue speckled roaster in the middle of the table with a big serving fork and spoon, and folks helped themselves alongside potato salad, green beans, and a simple lettuce salad. It also makes wonderful sandwiches on soft buns with pickles on the side, and any leftovers (if you’re lucky enough to have them) reheat beautifully for tomorrow’s supper.
Oven Baked 3-Ingredient Onion Soup BeefServings: 8
Ingredients
3 to 4 pounds beef chuck roast (or arm roast), trimmed of excess hard fat
2 (1-ounce) packets dry onion soup mix
2 cups beef broth (low sodium if possible)
Directions
Preheat your oven to 300°F (150°C). Set out a blue speckled enamel roasting pan or any heavy roasting pan with a tight-fitting lid.
Place the beef chuck roast in the center of the roasting pan. If there are any especially thick, hard pieces of fat on the outside, trim those off, but leave some marbling for flavor.
Sprinkle the dry onion soup mix evenly over the top and sides of the roast, pressing it in lightly with your fingers so it sticks. Some of the mix will fall into the pan—that’s fine, it will become part of the gravy.
Pour the beef broth around the roast in the bottom of the pan, trying not to wash too much of the onion soup mix off the top. The liquid should come up the sides of the meat but not cover it completely.
Cover the roasting pan tightly with its lid or a double layer of heavy-duty foil, crimping the edges well to keep the steam in. This is what makes the beef turn out fork-tender.
Place the covered pan on the middle rack of the preheated oven and bake for 3 to 3 1/2 hours, or until the beef is very tender when tested with a fork. For a larger 4-pound roast, plan on the longer time.
Carefully remove the pan from the oven and lift the lid away from you to avoid the steam. The roast should be surrounded by a rich brown onion gravy, with the onions from the soup mix softened and caramelized around the edges.
Use two forks to shred the beef right in the pan, pulling it into bite-sized pieces and mixing it into the onion gravy. If there are any large pieces of fat, discard them as you go.
Stir the shredded beef and onions together so everything is coated in the savory brown gravy. If the gravy seems too thin, return the uncovered pan to the oven for 10 to 15 minutes to reduce slightly. If it seems too thick, splash in a little extra broth or hot water and stir.
Taste the gravy and add a pinch of salt and black pepper only if needed; the onion soup mix and broth are usually salty enough on their own.
Serve the shredded onion soup beef hot, straight from the blue speckled roasting pan, spooning plenty of the caramelized onions and brown gravy over each serving.
Variations & Tips
For a slightly richer flavor, you can swap 1 cup of the beef broth for 1 cup of dry red wine, just like my aunt did when she was cooking for adults only. If you prefer slices instead of shreds, cook a slightly leaner roast (like bottom round) and start checking for doneness around 2 1/2 hours, slicing it against the grain and spooning the onion gravy over the top. To stretch the meal for a big gathering, tuck 1 to 2 pounds of quartered yellow onions around the roast before baking; they’ll soften and caramelize in the juices and give you even more onions in the gravy without adding any new pantry ingredients. For a slow cooker version, assemble everything in the crock, cover, and cook on LOW for 8 to 10 hours until the beef shreds easily. Leftovers freeze well: cool completely, pack the beef and gravy into freezer containers, and thaw gently for quick sandwiches or an easy supper over potatoes on a busy night.
