Step 1

Whisk together the balsamic vinegar, 2 tablespoons of the olive oil, maple syrup, garlic, salt and pepper in a small bowl.

Step 2

Place the chicken thighs in a glass dish or plastic bag and pour the marinade on top. Place in the refrigerator and marinate for 2 hours.

Step 3

Preheat the oven to 400 degrees fahrenheit.

Step 4

Slice the brussels sprouts in half and the red onion into wedges. Place the brussels sprouts and onion on a large baking sheet and drizzle with two tablespoon of olive oil and sprinkle with salt and pepper. Mix together to coat, then create spaces for the chicken.

Step 5

Remove the chicken from the marinade and place on the sheet pan. Cook for 30 minutes or until the chicken is cooked through.

Step 6

While the chicken is cooking, pour the remaining marinade into a small saucepan on medium heat. Simmer for 8-10 minutes or until the sauce is reduced and thickened. Open the oven, brush the glaze on the chicken and continue cooking.

Step 7

Once the chicken is fully cooked, serve immediately.