Slow Cooker French Onion Soup
A rich and flavorful slow cooker French onion soup, perfect for chilly evenings and gatherings.
Equipment
- Slow Cooker
- skillet
- cutting board
- sharp knife
- baking sheet
- oven
Ingredients
- 4 large Onions Sweet onions like Vidalia or yellow onions for best flavor.
- 4 tablespoons Unsalted butter Adds richness and helps caramelize the onions.
- 1 tablespoon Olive oil Prevents butter from burning.
- 1 teaspoon Sugar Helps to caramelize the onions.
- 4 cloves Garlic Minced for added aroma and depth.
- 8 cups Beef or vegetable broth High-quality broth for a rich base.
- 1 cup Dry white wine Adds acidity and complexity; can substitute with more broth.
- 2 teaspoons Fresh thyme leaves Fresh herbs elevate the flavor.
- to taste Salt Season to taste.
- to taste Pepper Season to taste.
- 1 baguette Baguette Sliced for toasting, serves as a crunchy topping.
- 2 cups Shredded Gruyère cheese Melts beautifully and adds a creamy, nutty flavor.
Instructions
- Peel and slice the onions thinly. Aim for even slices for uniform cooking.
- In a large skillet, melt the unsalted butter and olive oil over medium heat. Add the sliced onions and sugar, stirring to coat. Cook for about 15-20 minutes until golden brown.
- Add minced garlic to the skillet and cook for an additional 1-2 minutes until fragrant.
- Transfer the caramelized onions and garlic to the slow cooker. Pour in the broth and dry white wine. Add thyme, salt, and pepper, stirring to combine.
- Cover and cook on low for 6-8 hours or on high for 3-4 hours.
- About 30 minutes before serving, preheat the oven to 400°F (200°C). Slice the baguette and toast in the oven for 5-7 minutes until golden brown.
- Ladle the soup into oven-safe bowls, top with toasted baguette slices, and sprinkle with shredded Gruyère cheese.
- Place the bowls under the broiler for 2-3 minutes until the cheese is bubbly and golden. Serve hot.
Notes
This slow cooker French onion soup is a comforting dish perfect for chilly evenings and gatherings.