Pre-heat the oven to 375F. Cover 2 large sheet pans with foil and set aside.
Combine all of the spices into a small bowl and stir to combine.
Add all of the vegetables into a large mixing bowl (or two if you cannot fit it all in one bowl). Drizzle with olive oil and spices and stir well to combine.
Add in sliced sausages and combine well, then dump out onto your sheet pans evenly.
Bake at 375 for about 40 minutes or until the sweet potatoes can be easily pierced with a fork.