French Onion Chicken Sandwiches - Foxes Love Lemons
"French Onion Chicken Sandwiches - all of the flavor of a classic soup! Grilled chicken breasts are piled with caramelized onions and cheese...."
INGREDIENTS
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1 tablespoon extra virgin olive oil
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1 large white onion, thinly sliced
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1 teaspoon granulated sugar
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2 boneless, skinless chicken breasts, halved crosswise and pounded to 1-inch thickness, if necessary
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Nonstick cooking spray
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4 slices Swiss cheese
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4 hamburger buns
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2 cups baby spinach
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