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French Onion Chicken features juicy chicken breast, melted butter, caramelized onions, and lots of gooey melted cheese all cooked in one fabulous skillet.

French Onion Chicken

Juicy chicken breast, melted butter, caramelized onions, and lots of gooey melted cheese!
Servings: 4 people
Prep Time 10 minutes
Cook Time 45 minutes
Total Time 55 minutes


  • Large oven safe skillet, cast iron skillet, OR baking dish
  • Knife
  • Mixing spoon


  • 2 yellow onions
  • 4 tablespoons butter
  • 4 cloves garlic, minced
  • 1 teaspoon thyme
  • ½ cup chicken broth
  • 2 teaspoons balsamic vinegar
  • 2 chicken breasts, split lengthwise to be ½-¾ inch thick
  • 1 cup pepper jack cheese (or monterey jack or mozzarella)
  • ½ cup parmesan cheese
  • Pasta, rice, or mashed potatoes for serving, if desired


  • Preheat oven to 400º℉
  • Slice the onions about ¼ inch thick
  • Melt the butter over medium heat in a large skillet
  • Add the onions and simmer over medium-high heat until the onions are soft and translucent
  • Add the thyme and garlic and or another minute, stirring
  • Add the chicken broth and balsamic vinegar
  • Continue cooking, stirring occasionally until onions are soft and caramelized, about 10 minutes
  • Move onions to one side of the skillet and add the chicken breast
  • Cover the chicken breasts with the onions. If you don't have a cast iron skillet or over-safe skillet, transfer the onion mixture and chicken to a baking dish.
  • Sprinkle the chicken and onions with both cheeses, and place the skillet (or baking dish) in center of the oven.
  • Bake for about 30 minutes, until cheese is toasty, and chicken is cooked through
  • Remove from oven and serve with desired sides