{Crock Pot} French Onion Soup

INGREDIENTS

6 tbsp

butter

large yellow onions (sliced and separated into rings)

1 tbsp

white sugar

2 cloves

garlic (minced)

1/2 cup

cooking sherry

7 cups

reduced-sodium beef broth

1 tsp

sea salt (or to taste)

1/4 tsp

dried thyme

bay leaf

slices of French bread

1/2 cup

shredded Gruyere cheese

1/3 cup

shredded Emmental cheese (or swiss)

1/4 cup

freshly shredded Parmesan cheese

2 tbsp

shredded mozzarella cheese