Slow Cooker French Onion Soup

I found this recipe from 12 Tomatoes on Facebook and modified it a bit for my own taste.  Recipes are just a guideline!

Slow Cooker French Onion Soup

4 lbs. vidalia, sweet or yellow onions, sliced
1 stick butter
2 T. olive oil
10 c. beef broth
1 T. chopped garlic
1 bay leaf
1 t. thyme
1/4 c flour
2 T. worcestershire sauce
3 T. balsamic vinegar
1/2 c. red wine (I used a cabernet sauvignon)
sliced french bread, toasted
1 1/2 c. gruyere or swiss, grated or sliced
salt and pepper to taste

Melt butter and add olive oil and sliced onions.  Cook until onions are carmelized.

Put onions in slow cooker and add broth, garlic, bay leaf, thyme, salt and pepper.

Whisk together the flour, worcestershire, balsamic and red wine.  Add it to the slow cooker and stir to combine all ingredients.

Cook on low for 6-8 hours.

Ladle into oven safe crocks.  Float toasted bread and top with cheese.  Broil to brown cheese and serve.

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c = cup
t = teaspoon
T = tablespoon