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 French Onion Soup?

You need 23 ingredients. The key ingredients include: 1/3 c. vegetable oil, 6 c. thinly sliced onions, 3 Tbsp. flour, 3 cans (10 oz. each) beef bouillon, and more.

Is French Onion Soup suitable as soups & stews?

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

How do I store leftover French Onion Soup?

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

French Onion Soup Recipe

Name: French Onion Soup
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1/3 c. vegetable oil; 6 c. thinly sliced onions; 3 Tbsp. flour; 3 cans (10 oz. each) beef bouillon; 3 cans water; 12 slices 1-inch thick French bread; 2 Tbsp. butter, melted; 1 clove garlic, split; 1 c. grated cheese (Parmesan or Romano or both); 3/4 c. chopped onion; 3/4 c. chopped celery; 1 clove garlic, minced; 1/4 c. margarine or butter; 6 c. water; 1 (28 oz.) can tomatoes, cut up; 3/4 c. dry lentils, rinsed and drained; 3/4 c. pearl barley; 6 vegetarian bouillon cubes; 1/2 tsp. dried rosemary, crushed; 1/2 tsp. dried oregano, crushed; 1/4 tsp. pepper; 1 c. thinly sliced carrots; 1 c. shredded Swiss cheese

Warm up with this hearty French Onion Soup recipe. Made with vegetable oil, onions, flour and beef bouillon. Easy step-by-step instructions included.

This French Onion Soup relies on simple, everyday ingredients such as vegetable oil, thinly sliced onions, flour and (10 oz. each) beef bouillon. It comes together quickly and makes 4 servings, at about 1863 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

1863

kcal

Calories

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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French Onion Soup

Tips for the best results

Variations & substitutions

My Personal Notes

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