Go Back
–+ servings
favorite slow cooker french
Print

Favorite Slow Cooker French Onion Soup

Delicious!
Course Slow Cooker, Soup
Cuisine All-American, French
Keyword beef broth, cheese, onions
Prep Time 15 minutes
Cook Time 12 hours
Total Time 12 hours 15 minutes
Servings 8 servings
Author Lynn / Turnips 2 Tangerines

Equipment

  • Crock-pot, Slow cooker

Ingredients

  • 1/4 cup unsalted butter
  • 6 sprigs fresh thyme
  • 2 bay leaves
  • 16 cups vertically sliced large sweet onions
  • 1 tablespoon sugar
  • 6 cups unsalted beef stock, homemade or pre-made
  • 2 tablespoons red wine vinegar
  • 1 1/2 teaspoons kosher salt
  • 1 teaspoon black pepper
  • 24 1/2-inch slices French baguette, buttered and toasted
  • 1 1/4 cups shredded Gruyère or mozzarella cheese

Instructions

  • In the bottom of a 5 or 6 quart slow cooker, add butter, thyme sprigs bay leaves, sliced onions and sugar. Turn slow cooker to low and cook for 8-10 hours.
  • To the onion mixture in slow cooker, add beef stock, red wine vinegar, salt and pepper. Heat on high until hot. Meanwhile place oven rack at least 6 inches under broiler. Preheat broiler. Butter one side of baguette slices. Place slices, buttered side up on baking sheet. Place baking sheet under broiler. Broil slices just until toasted.
  • To Serve: Ladle hot French onion soup into oven-proof soup bowls. Float one or two slices of toasted baguette slices on top of soup. Sprinkle shredded cheese over the top. Place under the broiler until the cheese is melted and bubbly.

Notes

Recipe Note: 16 cups equals roughly 5 lbs of onions.