Heat 1 tablespoon unsalted butter in a heavy skillet over medium-high heat
Once the oil is hot, reduce the heat to medium and add the 2 medium onions sliced.
Cook the onions without disturbing for 5 to 8 minutes until they begin to turn golden brown on the bottom.
Flip the onions over and cook them for a few minutes longer until they turn golden brown on all sides.
Add 1 pound boneless chicken breasts and cook them for 3 minutes on each side.
Stir in 1/2 cup white wine reduce the heat to low and cook until the wine reduces by half.
Add 3/4 cup chicken broth, 2 teaspoons fresh thyme leaves and simmer for at least 15 minutes longer.
Top the chicken pieces with 4 ounces Swiss cheeseshredded) and pop the pan under the broiler to cover the skillet to melt the cheese.
Notes
Substitutes:
use 1/2 teaspoon of dried thyme in place of fresh thyme
one pound of boneless chicken thighs can be used in place of chicken breasts,
Serving Suggestions:This recipe tastes great as a main course with rice, cauliflower rice, roasted potatoes, green beans, mashed potatoes roasted vegetables or a salad.Store leftovers in an airtight container for up to 3 days in the refrigerator.See the article above for tips, variations and more!