Name: Slow Cooker French Onion Soup: 8 Hours of Comfort
Prep time: 15 min
Cook time: 8 h
Total time: 8 h 15 min
Cuisine: French
Ingredients: 6 large yellow onions, thinly sliced (about ¼ inch thick); 4 tablespoons unsalted butter; 2 tablespoons olive oil (extra virgin preferred); 6 cups beef broth (1.4 liters); ½ cup dry white wine (120 ml); 3 garlic cloves, minced; 3 sprigs fresh thyme (or 1 teaspoon dried thyme); 2 bay leaves; 1 tablespoon Worcestershire sauce; Salt and freshly ground black pepper to taste; 8 slices baguette, about ½ inch thick (day-old or lightly toasted); 2 cups shredded Gruyère cheese (200g)

Description

A hands-off slow cooker French onion soup recipe that delivers rich, savory broth and tender caramelized onions topped with gooey, toasted Gruyère cheese.

Ingredients

Scale

6 large yellow onions, thinly sliced (about ¼ inch thick)
4 tablespoons unsalted butter
2 tablespoons olive oil (extra virgin preferred)
6 cups beef broth (1.4 liters)
½ cup dry white wine (120 ml)
3 garlic cloves, minced
3 sprigs fresh thyme (or 1 teaspoon dried thyme)
2 bay leaves
1 tablespoon Worcestershire sauce
Salt and freshly ground black pepper to taste
8 slices baguette, about ½ inch thick (day-old or lightly toasted)
2 cups shredded Gruyère cheese (200g)

Instructions

Peel and thinly slice 6 large yellow onions about ¼ inch thick.
Optional: Heat 2 tablespoons olive oil and 4 tablespoons butter in a large skillet over medium heat. Add onions and cook, stirring occasionally, until softened and golden, about 10-15 minutes.
Transfer onions to slow cooker. Add minced garlic, ½ cup dry white wine, 6 cups beef broth, 3 sprigs fresh thyme, 2 bay leaves, and 1 tablespoon Worcestershire sauce. Stir to combine.
Cook on low for 8 hours, allowing onions to caramelize and flavors to develop. Avoid lifting the lid frequently.
After 8 hours, remove thyme sprigs and bay leaves. Taste and season with salt and pepper as needed. Preheat oven broiler and toast baguette slices on a baking sheet until golden, about 2-3 minutes per side.
Ladle soup into oven-safe bowls. Place toasted baguette slices on top, then pile shredded Gruyère cheese generously over the bread.
Place bowls on a baking sheet and broil until cheese is bubbly and golden brown, about 3-5 minutes. Watch closely to prevent burning.
Carefully remove from oven and serve immediately.

Notes

Prep Time: 15 minutes
Cook Time: 8 hours
Category: Soup
Method: Slow Cooker
Cuisine: French

Nutrition

Serving Size: 1 bowl
Calories: 280
Sugar: 5g
Sodium: 800mg
Fat: 14g
Saturated Fat: 8g
Unsaturated Fat: 6g
Trans Fat: 0g
Carbohydrates: 20g
Fiber: 2g
Protein: 15g
Cholesterol: 30mg

Keywords: Slow Cooker French Onion Soup, Comfort Food, Easy Recipe