This mushroom barley soup is a hearty, healthy winter meal. Made with simple vegetables and nutty barley, it's filling and vegetarian. Get the easy recipe!

This mushroom barley soup is exactly what you need on a cold winter day. It warms your heart, soul, and stomach, and the barley is a great source of fiber that keeps you full for hours. The broth is made with simple vegetables and herbs, letting the nutty flavor of the barley take center stage. I first made it during a snowstorm, and it's been a go-to ever since.

Why You’ll Love This Mushroom Barley Soup

This hearty soup uses everyday vegetables and barley, so it's budget-friendly and satisfying.
It's a vegetarian soup that's naturally full of fiber and flavor, perfect for a meatless Monday.
You can cook the barley a day ahead, making it a quick weeknight dinner when you're short on time.

Key Ingredients for the Best Mushroom Barley Soup

Barley: Pearl barley works well here, it cooks in about 30 minutes and has a tender, chewy texture. Hulled barley is more nutritious but takes longer; stick with pearl for this soup.
Mushrooms: White button mushrooms are mild and affordable, but cremini or baby bella add a deeper earthiness. Slice them about 1/4-inch thick so they soften without turning mushy.
Vegetable broth: Low-sodium broth lets you control the salt level. If you only have regular broth, skip adding salt until the end.

Essential Equipment for This Easy Soup Recipe

A large soup pot or Dutch oven for even heat distribution
A medium saucepan for cooking the barley
A sharp chef's knife for dicing vegetables and slicing mushrooms
Measuring cups and spoons
A wooden spoon or spatula for stirring

Tips for Perfect Mushroom Barley Soup Every Time

To save time, you can cook the barley up to a day in advance and store it in the fridge. When you're ready to make the soup, just stir it in during the last 15 minutes. Slice the mushrooms evenly so they cook at the same rate. And remember to season the soup at the end, because the vegetable broth can be salty, it's best to taste before adding extra salt.

Expert Tips for Maximum Flavor in Mushroom Barley Soup

To get the most flavor out of your mushrooms, cook them in a single layer without stirring for a few minutes. That lets them brown instead of steam. Once they release their liquid and it evaporates, they'll start to sizzle, that's when you stir. Also, let the onion and garlic cook until they're just starting to turn golden, about 5 minutes, for a deeper savory base.

Simple Ways to Change Up Your Mushroom Barley Soup

If you want to add more vegetables, try parsnips or celery root in place of some carrots. For a protein boost, stir in cooked shredded chicken or beef, but keep in mind that will make it non-vegetarian. You can also swap the barley for farro or brown rice; both hold up well in soup. For a creamier version, stir in a splash of milk or cream at the end, though the original is broth-based.

Serving Ideas for Mushroom Barley Soup

This soup is delicious with a crusty piece of bread for dipping. I like to top each bowl with a sprinkle of fresh parsley and a few cracks of black pepper. A side salad with a simple vinaigrette makes it a complete meal. If you want extra richness, add a dollop of sour cream or Greek yogurt.

How to Store Leftover Mushroom Barley Soup

Store leftover soup in an airtight container in the refrigerator for up to 5 days. The barley will continue to absorb liquid, so the soup will thicken. Stir in a little water or broth when you reheat to bring it back to your desired consistency.

Freezing Mushroom Barley Soup for Later

This soup freezes well for up to 3 months. Let it cool completely, then transfer to freezer-safe containers or zip-top bags. Thaw overnight in the refrigerator before reheating. The texture of the barley might soften slightly after freezing, but it's still delicious.

Reheating Mushroom Barley Soup the Right Way

The best way to reheat is on the stovetop over medium-low heat, stirring occasionally. Add a splash of broth or water if it's too thick. You can also microwave individual portions in 1-minute increments, stirring in between, until hot.