How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Mushroom Onion Soup?

You need 10 ingredients. The key ingredients include: 2 cups (8 ounces) fresh mushrooms, 3 tablespoons butter, 2 medium onions, chopped, 2 tablespoons all-purpose flour, and more.

Is Mushroom Onion Soup suitable as soups & stews?

Yes, Mushroom Onion Soup falls under the Soups & Stews category and is a great choice for this type of meal.

How do I store leftover Mushroom Onion Soup?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Mushroom Onion Soup Recipe

Name: Mushroom Onion Soup
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 cups (8 ounces) fresh mushrooms; 3 tablespoons butter; 2 medium onions, chopped; 2 tablespoons all-purpose flour; 5 cups chicken broth; 1/2 teaspoon salt, optional; Dash pepper; 1/3 cup uncooked long grain rice; 1 bay leaf; 2 tablespoons chopped fresh parsley

Warm up with this hearty Mushroom Onion Soup recipe. Made with mushrooms, butter, onions and flour. Easy step-by-step instructions included.

This Mushroom Onion Soup relies on simple, everyday ingredients such as (8 ounces) fresh mushrooms, butter, medium onions, chopped and all-purpose flour. It comes together quickly and makes 4 servings, at about 698 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It works as a light main on its own or as a starter alongside crusty bread, and it's just as good for a cozy night in as it is for feeding a crowd. Leftovers keep well, so it's a smart choice for meal prep too.

Updated Jun 30, 2026

Serves 4 Soups & Stews

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

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Mushroom Onion Soup

Tips for the best results

Variations & substitutions

My Personal Notes

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