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French onion soup that has been broiled so the cheese melts.
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Slow Cooker Classic French Onion Soup like Mom Use to Make

Prep Time 15 minutes
Cook Time 6 hours
Total Time 13 hours 15 minutes
Servings 4 people

Ingredients

  • 4-5 medium sized onions
  • ¼ cup butter please don't substitute
  • 5 cups beef broth canned or boxed is fine
  • 2 tbsp cognac substitute for brandy, red wine, or 1 tbsp red wine vinegar
  • 2 tbsp butter
  • 1n clove garlic minced
  • 4 thick slices french bread
  • 1 cup mozzarella cheese
  • ½ cup fresh grated parmesan cheese
  • salt and pepper to taste

Instructions

  • Turn slow cooker on high, add butter.
  • Slice your onion into 1/4 inch sliced circles. Take your onions one at a time and push out the centers to create circles.  .
  • Turn the slow cooker onto low and let the onions cook for 6 to 8 hours.  The will become sweet and translucent.
  • Add the broth and cognac, simmer for half an hour.
  • Slice your french bread at least 1/2 inch thick. Trim so it fits your bowls.
  • Add 2 tbsp of butter and a minced clove of garlic to a small bowl, and mix. 
  • Butter the french bread and place under the broiler until toasted.
  • Grate the cheeses. 
  • Just before serving, ladle the french onion soup into oven proof bowls.
  • Float a piece of french bread on top of each bowl of soup.  Sprinkle with both cheeses.
  • Place onto a large pan to transfer to the oven.  Place under the broiler until the cheese melts and turns golden. It only takes about 3 minutes.  Remove from oven and serve.  Grate the cheeses.  Just before serving, ladle the french onion soup into oven proof bowls. Float a piece of french bread on top of each bowl of soup.  Sprinkle with both cheeses.