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Keto French Onion Soup

A delicious twist on classic French onion soup, low in carbohydrates and topped with melty cheese.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 6 servings
Course: Appetizer, Main Course
Cuisine: French, Keto
Calories: 250
Ingredients Method Notes

Ingredients
  

For the Soup
  • 1 ounce butter For sautéing the onions
  • 4 large onions, thinly sliced Yellow or sweet onions recommended
  • 1/2 teaspoon allulose (or any granulated sweetener) To balance the flavors
  • 1/2 teaspoon pepper Adjust according to taste
  • 32 ounces beef broth For a rich flavor
  • 3 tablespoons Worcestershire sauce Adds depth and umami
  • 2 keto hot dog buns keto hot dog buns For making cheesy toasts
  • 1 1/2 cups Gruyere cheese, finely shredded Also for topping the soup
  • 4 springs thyme, loosely torn For garnish

Method
 

Preparation
  1. Preheat your oven to 200°C (400°F). Line a baking sheet with parchment paper.
  2. In a large soup pot over medium heat, melt the butter. Add the sliced onions, sweetener, and pepper. Sauté for about 8-10 minutes until the onions are soft and golden.
Cooking
  1. Pour in the beef broth and Worcestershire sauce. Bring the mixture to a simmer, cover the pot, and let it cook for another 10 minutes.
  2. While the soup simmers, prepare the cheesy toasts. Slice the keto hot dog buns into six thick pieces each and place them on the lined baking sheet. Sprinkle half of the Gruyere cheese over the top.
  3. Bake in the oven for 6-8 minutes, or until the buns are golden brown.
Serving
  1. Ladle the soup into bowls. Top each bowl with 1-2 pieces of cheesy toast, sprinkle with extra Gruyere cheese, and garnish with a sprig of thyme.

Notes

Store leftovers in an airtight container in the refrigerator for 3-4 days. Can also freeze for 2-3 months. To reheat, warm on the stove over medium heat. Also consider making the soup a day in advance for enhanced flavors.