Preheat the oven to 180°C (355°F) . Line a baking tray with parchment paper and grease a large baking dish. Rinse the chicken or the whole chicken under cold water and pat it dry with a kitchen towel.
Place the chicken breast-side up in the baking dish. Season the chicken generously with salt and pepper.
In a small bowl, combine Dijon mustard, melted butter, honey, lemon juice, and chopped garlic. Mix well to create a smooth glaze
Rub the glaze all over the chicken, ensuring it is well coated. Rub some glaze under the skin and inside the cavity for extra flavor
Stuff the chicken cavity with the peeled small onions and chopped green onions. Roast the chicken in the preheated oven for 1 hour 25 minutes, with the legs pointing toward the back of the oven. Baste the chicken halfway through cooking with the pan juices
Remove the chicken from the oven and let it rest for 10–15 minutes before carving. Serve warm with your favorite sides
