There is something mighty comforting about a simple Amish-style bake, especially one that asks so little of the cook and still comes out tasting like Sunday supper. This oven baked beef and mushroom casserole leans on pantry convenience with cream of mushroom soup with roasted garlic, then lets the oven do the slow, steady work of turning round steak tender and savory. It is the kind of practical, filling meal that feels right at home on a Midwestern table, where thrift, good sense, and hearty flavor have always gone hand in hand.
Serve this beef and mushroom bake with buttery mashed potatoes, egg noodles, or steamed rice to catch every bit of the creamy gravy. A side of green beans, buttered corn, or a crisp lettuce salad balances the richness nicely, and warm rolls or a square of homemade bread make it a full supper worthy of second helpings.
Oven Baked 4-Ingredient Amish Beef and Mushroom Bake
Servings: 6
Ingredients
2 pounds beef round steak
2 cans condensed cream of mushroom soup with roasted garlic, 10.5 ounces each
1 packet onion soup mix, about 1 ounce
1 cup sliced mushrooms
Directions
1. Preheat the oven to 325°F and lightly grease a 9x13-inch baking dish.
2. Lay the beef round steak in the baking dish in an even layer. If the pieces are large, cut them into serving-size portions so they fit neatly.
3. In a medium bowl, stir together the cream of mushroom soup with roasted garlic, onion soup mix, and sliced mushrooms until well combined.
4. Pour the soup mixture evenly over the raw beef, covering the meat as completely as possible.
5. Cover the dish tightly with foil and bake for 1 hour 45 minutes to 2 hours, or until the beef is tender and cooked through.
6. Remove the foil, spoon some sauce over the top, and let the bake rest for 5 to 10 minutes before serving.
Variations & Tips
Add a little liquid: If you like a thinner gravy, stir 1/2 cup of milk or beef broth into the soup mixture before pouring it over the steak. That makes extra sauce for potatoes or noodles.
Use fresh onion flavor: A small sliced onion can be tucked around the beef before adding the soup mixture. It bakes down sweet and soft and gives the dish a little more old-fashioned supper flavor.
Choose the right cut: Round steak is a budget-friendly cut, but it does best with slow baking. Keep the dish covered well so the meat braises gently and stays tender instead of drying out.
Make it heartier: You can add a layer of sliced potatoes under the beef if you want an all-in-one bake. If you do, allow a little extra baking time so the potatoes soften through.
Leftover tip: Leftovers warm up beautifully the next day. Store them in the refrigerator and reheat covered in a low oven or in the microwave, adding a splash of milk if the sauce has thickened too much.