French Onion & Kale Soup with Gruyere Croutons
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French Onion & Kale Soup with Gruyere Croutons

French Onion & Kale Soup with Gruyere Croutons

French onion soup gets its flavor from deeply caramelized onions. Achieving full caramelization is the key to greatness! Our version has two secret ingredients: soy sauce and thyme for umami and depth. Of course, it’s not French onion soup without a gooey, cheesy crouton on top.


Produced in a facility that processes eggs, milk, fish, peanuts, sesame, shellfish, soy, tree nuts, and wheat.

Total Time
Prep Time


serving amount

4 ounce

Tuscan Kale

2 unit

Yellow Onion

2 unit

Veggie Stock Concentrate

3 teaspoon

Soy Sauce

(Contains Soy, Wheat)

¼ ounce


1 unit


(Contains Soy, Wheat)

2 clove


4 ounce

Gruyère Cheese

(Contains Milk)

Not included in your delivery

1 teaspoon


1 tablespoon


(Contains Milk)


Nutrition Values

/ per serving
Calories515 kcal
Energy (kJ)2155 kJ
Fat25 g
Saturated Fat16 g
Carbohydrate52 g
Sugar9 g
Dietary Fiber6 g
Protein24 g
Sodium1358 mg
Due to the different suppliers we purchase our products from, nutritional facts per meal can vary from the website to what is received in the delivered box, depending on your region.


Large Pot
Large Pan
Baking Dish


slice onions

Halve, peel, and thinly slice the onions.

cook onions

Heat 1 Tablespoon butter in a large pot over medium heat. Add the onions to the pot and cook, tossing, for 8-10 minutes, until very soft and beginning to caramelize. Add 1 teaspoon sugar to the pot and cook, tossing occasionally, for another 20-25 minutes, until dark brown and completely caramelized. TIP: If the bottom of the pan begins to burn, add a splash of water and scrape up the browned bits with a wooden spoon.

slice the kale

Preheat the broiler or oven to 500 degrees. While the onion caramelizes, thinly slice the baguette on an angle. Halve 1 garlic clove, then mince or grate the remaining garlic clove. Strip the thyme leaves off the stem, then roughly chop the leaves. Remove the stems and ribs from the kale, then thinly slice the leaves into ribbons.

stir in kale

When the onion is fully caramelized, stir the minced garlic and thyme into the pan and cook for 30 seconds, until fragrant. Stir 3 ½ cups water, the stock concentrates, and soy sauce into the pot. Bring to a boil, then reduce to a low simmer for 5-7 minutes. Stir the kale into the soup to wilt. Taste and season generously with salt and pepper.


Meanwhile, place the baguette slices on a baking sheet and place in the oven for about 1-2 minutes, until toasted and slightly golden brown. Remove from oven and rub the bread with the halved garlic clove. Sprinkle the toasts with the gruyere cheese. Return the baking sheet to the oven for another 1-2 minutes, until cheese is bubbly.


Serve the French onion soup divided between bowls and top with a few gruyere croutons. Serve remaining gruyere croutons on the side for dipping. Enjoy!