"The Crock Pot French Onions Soup recipe is the easiest French Onion soup recipe you will ever make...."
INGREDIENTS
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6 tablespoons unsalted butter
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1 tablespoon olive oil
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5 cups thinly sliced onion
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1/2 cup cooking wine
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3 tablespoons Worcestershire sauce
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1 teaspoon ground pepper
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1/2 teaspoon salt
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32 ounces beef broth
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1/4 teaspoon dry thyme
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Toasted French bread slices
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Sliced Provolone or Swiss cheese
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1/2 cup finely grated fresh Parmesan cheese