Crock Pot French Onion Soup

A rich and comforting crock pot French onion soup recipe that’s easy to prepare. Perfect caramelized onions, savory broth, and cheesy bread topping; all with minimal effort thanks to the slow cooker.

Course: Dinner, Main Course, Soup

Cuisine: French, American

Prep Time: 15

Cook Time: 6

Broiling: 15

Total Time: 6 30

Servings:

Calories: 410kcal

Cost: $12

Equipment

1 Crock Pot (6-quart)
1 Large skillet
1 Sharp knife
Oven-safe bowls

Ingredients

Soup Base

6 large yellow onions thinly sliced
4 tablespoon butter
2 tablespoon olive oil
1 teaspoon sugar for caramelization
1 teaspoon salt
0.5 teaspoon black pepper
6 cups beef broth low sodium preferred
0.5 cup dry white wine optional
2 bay leaves
1 teaspoon fresh thyme or ½ teaspoon dried thyme

Topping

6 slices French bread or baguette
1.5 cups Gruyere cheese grated
0.5 cup Parmesan cheese grated

Instructions

Melt cheese until bubbly and golden.
Caramelize – Cook onions with butter and oil until golden.
Transfer – Move onions to crock pot.
Add broth – Stir in broth, wine, thyme, bay leaves.
Slow cook – Cover and cook on LOW 6 hrs (or HIGH 3 hrs).
Toast bread – Prepare baguette slices until golden.
Top soup – Ladle soup into bowls, add bread and cheese.
Broil – Melt cheese until bubbly and golden.

Notes

Nutrition information is automatically calculated, so should only be used as an approximation.

Nutrition