Preheat your oven to 325°F (163°C).
Season the goose inside and out with salt, pepper, thyme, rosemary if using, and minced garlic. Tie legs together tightly with kitchen twine.
Place breast-side up on a rack in a roasting pan to catch drippings during cooking. Baste the goose every 30 minutes for even browning without opening the oven door too often, which can drop temperatures and increase cooking time.