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Gratinated Onion Soup with Thermomix

Gratinated Onion Soup with Thermomix

TThermomix
Prep15 min
Cook45 min
Cuisine: French

Here is the recipe for gratinated onion soup made with Thermomix. Onion soups have been popular at least since Roman times. Over the ages, they were often considered humble food, as onions were abundant and easy to cultivate. The modern version of this gratinated soup appeared in France in the 17th century, prepared with stale bread or croutons, beef broth, and caramelized onions.

Nutrition per serving
624
Calories
20.4g
Protein
97.1g
Carbs
20.2g
Fat
by CookAdaptPublished Jul 12, 2026
Servings
4

Ingredients

  • butter
    20 g butter
  • onion
    500 g onion
  • olive oil
    1 tbsp olive oil
  • flour
    20 g flour
  • white wine
    200 g white wine
  • water
    700 g water
  • pepper
    3 pinch pepper
  • bread
    4 slice bread
  • 60 g grated Gruyère
  • 1 beef bouillon cube
T

Thermomix Instructions

Place 20 grams of butter into the Thermomix bowl.

Add the lid with the measuring cup.

Cook 3 min 10 sec / 90°C / speed 1.

ThermomixSimmer·90°C·Speed 1·3m 10s

Add 500 grams of onions cut in half into the Thermomix bowl.

Add the lid with the measuring cup.

Mix 6 sec / speed 4.5.

6s

Scrape down the sides of the bowl with the spatula.

Add 1 tablespoon of olive oil into the Thermomix bowl.

Add the lid with the measuring cup.

Cook 12 min / 120°C / speed 1.

ThermomixSauté·120°C·Speed 1·12 min reverse

Add 20 grams of flour into the Thermomix bowl.

Add the lid with the measuring cup.

Mix 10 sec / speed 3.

10s

Add 200 grams of white wine into the Thermomix bowl.

Add 700 grams of water into the Thermomix bowl.

Add 1 beef bouillon cube into the Thermomix bowl.

Add 3 pinches of pepper into the Thermomix bowl.

Add the lid with the measuring cup.

Cook 25 min / 100°C / speed 1.

ThermomixSimmer·100°C·Speed 1·25 min reverse

Transfer to a terrine.

Preheat the oven to 200°C.

Place 4 slices of toasted bread, broken into pieces, on top of the soup in the Thermomix bowl.

Sprinkle 60 grams of grated Gruyère (adjust to taste) over the top.

Bake in grill mode for 5 minutes at 200°C.

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Gratinated Onion Soup with Thermomix