Toss some onions in the slow cooker and come back to a timeless favorite!

French onion soup is a classic dish with roots in 18th-century France, known for its rich, savory flavors and comforting warmth. This slow cooker variation allows the onions to caramelize to perfection with minimal effort, making it an ideal recipe for busy individuals who still want to enjoy a homemade meal. The addition of white wine and fresh herbs elevates the traditional flavors, offering a sophisticated twist that is sure to impress.

This herb-infused French onion soup pairs beautifully with a light, crisp salad dressed in a simple vinaigrette. For a heartier meal, consider serving it alongside a charcuterie board with a selection of cured meats, cheeses, and pickled vegetables. A glass of the same white wine used in the soup will complement the flavors nicely.

Slow Cooker Herb-Infused French Onion Soup with White Wine

Servings: 6Ingredients

4 large onions, thinly sliced
1/4 cup unsalted butter
1 tablespoon sugar
1 teaspoon salt
1 sprig fresh rosemary
6 cups beef broth
1 cup white wine
3 sprigs fresh thyme
1/2 teaspoon freshly ground black pepper
Sliced French bread or croutons
1 1/2 cups Gruyere cheese, sliced

Directions

Place the sliced onions, butter, sugar, salt, and rosemary sprig in the bottom of a 6-quart slow cooker.

Cover and cook on high for 7 hours until the onions are soft and caramelized.

Add the beef broth, white wine, thyme sprigs, and pepper to the slow cooker.

Cover and cook on high for another hour to let the flavors meld together.

Preheat your broiler.

Ladle the soup into ovenproof mugs.

Top each mug with a slice of French bread or a handful of croutons.

Add slices of Gruyere cheese on top.

Place the mugs under the broiler until the cheese is bubbly and golden, about 2-3 minutes.

Serve hot and enjoy.

Variations & Tips

For a vegetarian version, substitute the beef broth with vegetable broth. You can also experiment with different types of cheese, such as Emmental or Comté, for a unique flavor. If you prefer a deeper flavor, try adding a splash of brandy or sherry along with the wine. For a gluten-free option, use gluten-free bread or omit the bread entirely and top with extra cheese.