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Easy French Onion Soup | Freezer-to-Crockpot Recipe | Soup Recipes | Food Made Simple

Freezer French Onion Soup

This classic soup is made freezer friendly and tastes absolutely amazing!!
Course Main Course
Cuisine American
Keyword Freezer French Onion Soup
Prep Time 7 minutes
Cook Time 4 hours
Total Time 4 hours 7 minutes
Servings 4 people


  • 4 cups sweet onions or Vidalia if in season sliced
  • 1/2 cup butter
  • 2 cartons Beef stock
  • salt and pepper to taste
  • Gruyère sliced cheese( cooking day only)
  • Italian bread sliced (cooking day only)
  • fresh or dried thyme


  1. Slice onions and set aside.
  2. Melt butter and saute 2 cups of onions in butter until soft and golden brown. Set aside and let cool.
  3. In a large bowl mix together sauteed onions, raw sliced onions and stock, then divide into gallon size bags. (be sure to label bags first). Freeze until needed.
  4. Cook in slow cooker on high for 3-4 hours or on low for 4-5 hours. Be sure to season with salt and pepper.
  5. Once ready to serve; slice bread, butter it and toast.
  6. Then ladle soup into crocks top with bread then cheese and place under broiler for 1-2 minutes to melt cheese.
  7. Once melted, sprinkle with some fresh Thyme and serve hot.