Easy Slow Cooker French Onion Soup Recipe: A Classic Comfort Food
I absolutely adore this recipe because it allows me to impress guests with a dish that tastes like it took hours to prepare, but is actually a breeze to make! This Slow Cooker French Onion Soup is the ultimate comfort food, perfect for cozy evenings or dinner parties. With its rich, caramelized onions, savory broth, and melted Gruyere cheese, it’s a classic recipe that never fails to delight. Plus, using a slow cooker makes it incredibly easy and hands-off—ideal for busy cooks!
Ingredients
- 4 large onions, thinly sliced
- 2 tablespoons butter
- 1 teaspoon sugar
- 2 quarts no-sodium beef broth
- ¼ cup sherry
- 2 fresh thyme sprigs
- 1½ teaspoons salt
- Pepper, to taste
- Sliced bread (or croutons)
- 8 ounces Gruyere cheese, sliced (Swiss cheese is a great alternative)
Preparation
In a 6-quart slow cooker, combine the thinly sliced onions, butter, sugar, and salt. Set the cooker to high and let it work its magic for 7 hours. The onions will become tender and develop a beautiful, rich brown hue—the key to that irresistible flavor.
Once the onions are caramelized, stir in the no-sodium beef broth, sherry, and fresh thyme sprigs. Season with pepper to taste, mix well, cover, and let the soup simmer on high for another hour. This step allows all the flavors to meld together perfectly.
When you’re ready to serve, place slices of bread or croutons on top of the soup in each bowl. Crown with generous slices of Gruyere cheese. For an extra indulgent touch, let the soup cook for an additional 15 minutes to melt the cheese into a gooey, golden layer.
This French Onion Soup is a timeless classic, made even easier with the convenience of a slow cooker. It’s a dish that warms the soul and impresses every time. Enjoy!
