When you don’t know what to make for dinner, a simple casserole can be the perfect answer. This creamy mushroom beef stew is the kind of meal that requires very little preparation but delivers the comforting flavors of a slow-cooked dinner.

Tender chunks of beef, onions, creamy mushroom soup, and a few simple ingredients come together in one baking dish. The result is a rich, savory meal with a creamy sauce that pairs beautifully with mashed potatoes, rice, egg noodles, or crusty bread.

The best part is that you don’t need an elaborate recipe or a long list of ingredients. This is the kind of dependable dinner that can become a regular part of your meal rotation.

The Simple Idea Behind This Recipe

The recipe shown in the image uses a very straightforward method: place raw beef stew meat and chopped onion into a casserole dish, add cream of mushroom soup and a couple of additional ingredients, then bake everything together until the beef is tender.

The basic combination is:

• Beef stew meat
• Onion
• Cream of mushroom soup
• Beef broth
• Worcestershire sauce

Some versions of this casserole use slightly different ingredients, such as dry onion soup mix, mushrooms, garlic, or seasonings. The recipe can easily be adapted depending on what you have available.

Ingredients

For approximately 4–6 servings, you’ll need:

Main ingredients

• 2 pounds beef stew meat, cut into bite-size pieces
• 1 medium onion, diced
• 1 can cream of mushroom soup
• 1 cup beef broth
• 1 tablespoon Worcestershire sauce
• 1 teaspoon garlic powder
• 1/2 teaspoon black pepper
• 1/2 teaspoon salt, or to taste
• 1 tablespoon cooking oil, optional

Optional additions

You can also add:

• 1 cup sliced mushrooms
• 1 teaspoon dried thyme
• 1 teaspoon dried parsley
• 1–2 cloves minced garlic
• 1 tablespoon Dijon mustard
• A handful of frozen peas or carrots added near the end

For serving:

• Mashed potatoes
• Egg noodles
• Rice
• Pasta
• Crusty bread

Preparing the Beef

Start by cutting the beef stew meat into reasonably uniform pieces.

Uniform pieces are useful because they tend to cook more evenly. If some pieces are extremely large while others are very small, the smaller pieces may become overcooked before the larger pieces are tender.

Pat the beef dry with paper towels before cooking.

At this point, you have two options.

Option 1: Add the Beef Directly to the Casserole

This is the easiest method and requires the least preparation.

Place the raw beef into a suitable oven-safe casserole dish.

Add the chopped onion and distribute it around the beef.

This method is convenient, especially when you’re looking for a simple weeknight meal.

Option 2: Brown the Beef First

For deeper flavor, you can quickly brown the beef in a hot skillet before placing it in the casserole.

Heat a small amount of oil and brown the beef in batches rather than overcrowding the pan.

You don’t need to cook the beef through at this stage.

The purpose is simply to develop a browned exterior and additional savory flavor.

Transfer the browned beef to the casserole dish and continue with the recipe.

This extra step isn’t essential, but many people prefer the richer flavor it provides.

Making the Creamy Mushroom Sauce

In a mixing bowl, combine:

• Cream of mushroom soup
• Beef broth
• Worcestershire sauce
• Garlic powder
• Black pepper
• Thyme, if using

Whisk everything together until relatively smooth.

The mixture will be thick because of the condensed mushroom soup.

Once combined, pour the sauce over the beef and onions.

Try to distribute it as evenly as possible.

The sauce will loosen during cooking as moisture is released from the beef and onions.

Adding Mushrooms

If you enjoy mushrooms, fresh mushrooms make an excellent addition.

Slice about one cup of mushrooms and distribute them over the beef before adding the sauce.

The mushrooms will release moisture during cooking and absorb some of the savory flavors from the sauce.

You can use white button mushrooms, cremini mushrooms, or another mild mushroom variety.

If you’re using canned mushrooms, drain them well before adding them.