The Most Delicious Slow Cooker French Onion Soup

The Most Delicious Slow Cooker French Onion Soup

French onion soup will never be fast, but at least you can outsource the slow simmering part to your Crockpot.


  • 270 min
  • 4-6 people
  • Easy

4 onions, sliced into rings

4 tablespoons butter

2 tablespoons minced garlic

8 cups beef broth

1 bay leaf

6 slices crusty french bread

8-12 slices of swiss cheese



  • Prep: 30 min
  • Cook: 240 min
  • Ready: 270 min

Add butter and onion rings to the pan and saute over medium-high heat for about 10 minutes or until onions start to brown. Cover and cook about 5 minutes.

Transfer onions to slow cooker. Add garlic, broth, and bay leaf. Cover and cook on high 3-4 hours or on low 6-8 hours.

Preheat oven to 200 °C. Place slices of bread in a single layer on a baking sheet. Place in preheated oven for about 5 minutes, then flip the bread slices over and return to oven for another 5 minutes or so until bread is dried and crunchy. Set aside.

Place oven-safe bowls on the baking sheet. Fill each with soup from the slow cooker. Place 2 slices of swiss cheese (overlapping) on top of the soup so the edges are hanging over the sides of the bowls. Bake about 10 minutes until cheese is melted. Serve with crusty bread and sprinkle with parsley if desired.

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