Preheat oven to 190C / 375F

Combine the brown sugar, Coke Zero and soy sauce in a medium saucepan over high heat until boiling.

Stir the cornstarch and water together in a small bowl, then stir it into the boiling sauce until combined and lump free.

Boil the sauce for 5-7 minutes or until it has reached your desired thickness.

Season the chicken thighs with salt and pepper and place in a baking pan. Scatter the minced garlic and sliced onion in the pan as well.

Pour the sauce over the chicken thighs and turn them until well coated in the sauce.

Bake with skin side up in the preheated oven for 30-35 minutes or until the chicken is cooked through. Brush the chicken thighs halfway through cooking with coca cola glaze from the pan. (If using boneless skinless chicken thighs baking time would be around 20-25 minutes.)

Once cooked, take out of the oven and let rest for 5 minutes before serving.

Serve with rice, sesame seeds and sliced spring onions.