Oven baked 3-ingredient beef mercer is the kind of old-fashioned supper that earns a permanent place in the family recipe box. With just a few pantry-friendly ingredients, the beef bakes low and slow until it turns tender, deeply savory, and coated in a rich glaze that tastes like much more effort than it takes. Recipes like this became popular in community and church cookbooks because they were dependable, filling, and easy to make for a crowd, and that same comfort still makes it a lovely choice for cool evenings.
Serve this cozy beef dish over mashed potatoes, buttered egg noodles, or fluffy white rice to catch every bit of the sauce. On the side, simple green beans, roasted carrots, or a crisp tossed salad balance the richness nicely, and a warm pan of dinner rolls makes it feel especially like a Sunday supper.
Oven Baked 3-Ingredient Beef Mercer
Servings: 6
Ingredients
2 pounds beef stew meat or beef chuck, cut into bite-size pieces
1 cup ketchup
1 packet dry onion soup mix
Directions
1. Preheat the oven to 325°F. Lightly grease a 9x13-inch glass baking dish.
2. Spread the beef pieces evenly in the prepared baking dish.
3. In a small bowl, stir together the ketchup and dry onion soup mix until well blended.
4. Spoon the sauce over the beef and toss gently to coat the pieces as evenly as possible.
5. Cover the dish tightly with foil and bake for 1 hour. Remove the foil, stir, and continue baking for 30 to 45 minutes more, or until the beef is fork-tender and the sauce has thickened and caramelized around the edges.
6. Let the dish rest for 5 to 10 minutes before serving so the sauce settles over the beef.
Variations & Tips
For more tenderness: If your beef is still a little firm, cover it back up and bake longer in 15-minute increments. Chuck can vary, and a little extra time often makes all the difference.
For a sweeter glaze: Stir in 1 to 2 tablespoons of brown sugar if your family likes that classic sweet-savory church cookbook flavor. It helps the sauce turn especially glossy.
For picky eaters: Cut the beef pieces a little smaller before baking so they are easier to serve and eat. You can also spoon extra sauce over rice or potatoes for anyone who prefers softer bites with plenty of flavor.
For easy make-ahead prep: Assemble the beef and sauce in the baking dish a few hours ahead, cover, and refrigerate. When dinnertime comes, set the dish out while the oven preheats, then bake as directed.
For a fuller meal: Add chunks of carrots or small potatoes around the beef during the last 45 minutes of baking if you'd like to turn it into more of a one-pan supper. Just make sure the vegetables are cut evenly so they cook through.