Tomato beef barley soup is a delicious slow cooker dish filled with a beefy tomato-based broth, tender chunks of meat, flavorful veggies, and soft, chewy barley. A perfect one-pot, dump-and-go meal.

Looking down on a bowl of soup with beef, barley and veggies visable

Soup may be the most versatile dish around. It can be an appetizer, side dish, quick intermezzo, or a complete meal. It's popular all year round - but so particularly satisfying in colder months.

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📃Shopping list
🔪Assembly
🍽 Serving suggestions
How To Store Leftovers
Hints & Hacks
📖 Recipe

📃Shopping list

Raw ingredients for soup in slow cooker with labels

To make this easy mushroom barley slow cooker recipe, you will need:

chuck roast or stew meat
beef broth
carrots
celery
onion
crushed tomatoes
barley
dried shiitake mushrooms
minced garlic
thyme
bay leaves
worcestershire sauce
salt and pepper

🚀Jump to recipe card for exact quantities and detailed instructions

🔪Assembly

This is a voluminous recipe, so to start off, make sure you are using a 6 quart or larger slow cooker. Other than that, this is a straightforward and easy to assemble dish, No special instructions.

Add all ingredients into your slow cooker, except the salt. That can be added to taste, if needed, after the cooking time. A true "dump and go" slow cooker treat!

🍽 Serving suggestions

Homemade beef and barley soup is a full meal on its own. Protein, grains, and vegetables all in one bowl. It is great served with some warm crusty bread. A cool crisp side salad also makes for a wonderful pairing.

Crunchy crackers, such as soda crackers. multi-grain crackers or water biscuits also add some texture and flavor diversity when served with this soup.

A sweet bread such as raisin or cornbread/muffin also makes for a perfect go-with.

If you love this recipe, please let me know in the comment section below!

How To Store Leftovers

Soup leftovers store really well in airtight containers or zipper topped bags. They will stay fresh for about 3-4 days this way.

One great way to store leftovers is in a mini food warmer! (here is a different brand). It makes for a super way to transport and reheat leftovers.

This slow cooker soup can also be frozen. Airtight containers and/or zipper topped bags both work well for freezing. Frozen soup lasts anywhere from 3-4 months and can be easily defrosted by stovetop, microwave, or even slow cooker.

During the freezing and defrosting process, your soup may become thick. I personally love it like that, however if you prefer it thinner, you can add some additional beef broth to it.

Side view of tomato based soup with some of the soup running down the side

Hints & Hacks

Shiitake mushrooms can be omitted if you would like. They add a nice earthy flavor, but are fully optional here.
This soup calls for diced celery, carrots and onion. To keep things extra lazy, you can buy prepackaged cut veggies or mirepoix. Both fresh or frozen work equally well. Because I am always looking for shortcuts, I cut up celery, carrots and onion in advance and freeze them so they are always on hand for dishes like this one.
This is a great make-in-advance recipe. You can assemble all ingredients other than barley the night before. Barley can be carefully added at the time you are ready to commence cooking.
Love barley? Give chicken and barley a try too!
This is a great dish if your people will be eating at different times. After the cooking time, turn your slow cooker to warm (or have it automatically switch to warm if your slow cooker has this feature) and everyone can have a hot and filling meal, no matter what time of the evening they are ready to eat.
I always recommend the use of a slow cooker liner. Of course, this is an optional step. I like to purchase my liners in bulk for a less expensive per-piece price.
In the market for a new slow cooker? I Love mine!