Real Recipes From Real Home Cooks ®

all day cheesy french onion soup

Recipe by
Ellen Gwaltney Bales
Indianapolis, IN

I simply love a good French onion soup and I never make it at home. I rely on restaurants and not many serve it. This recipe makes me eager to try at home in the slow cooker. The picture alone is enough to make one drool! Recipe & photo: allrecipes.com

yield 8 serving(s)
prep time 40 Min
cook time 9 Hr
method Slow Cooker Crock Pot

Ingredients For all day cheesy french onion soup

  • 6 Tbsp
    butter
  • 4 lg
    yellow onions, sliced and separated into rings
  • 1 Tbsp
    white sugar
  • 2 clove
    garlic, minced
  • 1/2 c
    cooking sherry
  • 7 c
    reduced-sodium beef broth
  • 1 tsp
    sea salt, or to taste
  • 1/4 tsp
    dried thyme
  • 1
    bay leaf
  • 8 slice
    french bread
  • 1/2 c
    shredded gruyere cheese
  • 1/3 c
    shredded emmental cheese (if you can't find this, you can use a good swiss cheese)
  • 1/4 c
    freshly shredded parmesan cheese
  • 2 Tbsp
    shredded mozzarella cheese

How To Make all day cheesy french onion soup

  • 1
    In a large heavy pot, heat butter over medium-high heat; cook and stir onions until they become translucent, about 10 minutes. Sprinkle onions with sugar; reduce heat to medium. Cook, stirring constantly, until onions are soft and browned, at least 30 minutes. Stir in the garlic and cook until fragrant, about 1 minute.
  • 2
    Stir sherry into onion mixture and scrape bottom of pot to dissolve small bits of browned food from the pot. Transfer onions into a slow cooker and pour in the beef broth. Season to taste with sea salt; stir in thyme and bay leaf.
  • 3
    Cover and cook on LOW for 8 to 10 hours. About 10 minutes before serving, set oven rack about 8 inches from the heat source and preheat the oven's broiler. Arrange bread slices on a baking sheet.
  • 4
    Broil bread slices until toasted, 1 to 2 minutes per side.
  • 5
    Combine Gruyere, Emmental, Parmesan, and mozzarella cheeses in a bowl, tossing lightly. Fill oven-safe soup crocks 3/4 full of onion soup and float a bread slice in each bowl. Top with about 2 Tbsp. of cheese mixture per serving.
  • 6
    Place filled bowls onto a baking sheet and broil until cheese topping is lightly browned and bubbling, about 2 minutes.
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