Melt the butter in a frying pan over medium high heat and cook the onion until tender, about 7 minutes. Increase heat, add fennel seeds and garlic and cook for a further minute.

Remove from heat and transfer onion mixture to bowl. Stir through remaining ingredients. Season with salt and pepper, set aside to cool

Fill chicken cavity with stuffing, close with toothpicks or skewers. Tie drumsticks together and fold under wings

Place chicken on a roasting rack over a large baking dish. Bake in 190C preheated oven for 1 hour and 15 minutes, or until cooked through