Slow Cooker French Onion Soup Recipe
Updated Feb 15, 2021, Published Sep 01, 2017
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This Slow Cooker French Onion Soup recipe is better than a restaurant’s and took me years to perfect. It is one of my husband’s favorite soups and it was never “just right” until now.
Slow Cooker French Onion Soup Recipe
This Slow Cooker French Onion Soup recipe is better than a restaurant’s and one of my husband’s favorite soups.
Ingredients
- 3 large red onions, sliced very thin
- 3 large sweet white onions, sliced very thin
- 8 tablespoons unsalted butter, refined coconut oil, or ghee
- 1 tablespoon kosher or fine sea salt, or more to taste
- ⅔ cup dry red cooking wine or sherry
- 4 tablespoons Worcestershire sauce
- 1 bay leaf
- 1 teaspoon dried thyme, or 1 tablespoon fresh
- 7 cups gluten-free low-sodium beef stock
Instructions
- Put the onions in a slow cooker with the butter and salt. Cook on high for 6 hours, stirring occasionally.
- Once the onions are caramelized, add the remaining ingredients to the slow cooker and cook on high for another 2-4 hours.
- Alternatively, if you’re strapped for time, put the caramelized onions in a large soup pot and add the remaining ingredients. Bring to a boil, then simmer for 1 hour.
- Note: If you’re not dairy-free, pour some soup in an oven-safe soup crock and cover with 1-2 slices of provolone cheese. Place under the broiler for a couple minutes until the cheese is bubbly and slightly brown on the edges.
Nutrition
Calories: 184kcalCarbohydrates: 12gProtein: 5gFat: 11gSaturated Fat: 7gCholesterol: 30mgSodium: 1377mgPotassium: 591mgFiber: 1gSugar: 5gVitamin A: 355IUVitamin C: 7.2mgCalcium: 52mgIron: 1.4mg
Nutrition information is automatically calculated, so should only be used as an approximation.
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