Add the chicken to a rimmed baking sheet, then season with salt and pepper.
4 boneless, skinless chicken breasts, salt & pepper
Bake at 350° for 30 minutes.
Melt the butter in a large skillet set over medium/low heat. Add the sugar and whisk in to evenly combine.
2 tbsp butter, 2 packed tbsp brown sugar
Add the apples and onions then gently toss to evenly coat. Cook for 2 minutes, then remove the skillet from the heat, and set aside.
2 large apples, 2 medium yellow onions
Add the juice, broth, vinegar, and mustard to a small bowl. Whisk to evenly combine. Set aside.
1/2 cup apple juice, 1/4 cup chicken broth, 1 tbsp white wine vinegar, 1 tsp ground mustard
Carefully remove the chicken from the oven, then add the fruit and onion mixture to the pan around the chicken. Pour the juice mixture evenly overtop.
Bake for 30-35 minutes more.
Serve warm and enjoy!