INGREDIENTS
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2 tablespoons Land O’ Lakes unsalted butter
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3 large yellow onions, thinly sliced
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1 teaspoon Domino sugar
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1 cup Swanson chicken broth
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1 cup beef broth
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1 teaspoon chopped fresh thyme
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1 teaspoon Dijon mustard
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1 teaspoon kosher salt
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1 teaspoon freshly ground black pepper
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1 baguette, sliced 1/2 inch thick (24 slices)
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2 cups shredded Gruyère cheese
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Fresh thyme, for garnish