In a large roasting pan, toss together first 5 ingredients (apples through garlic). Sprinkle with seasonings (thyme through lemon juice) then toss mixture with the orange juice, zest and melted ghee. Roast for 15 to 20 minutes then remove from the oven and toss.
Lay the sausage links over the top of the roasted vegetables then bake for 20 to 25 minutes or until sausages are cooked through and vegetables are fork-tender.