Preheat the oven to 425°F or the grill to medium-high heat (approximately 375-400°F).
Cut four 12 x12 sheets of foil and set aside.
Combine the seasoning mix in a small bowl.
Place the sausage and vegetables in a large bowl and add the seasoning mix. Toss well to coat.
Divide the mixture evenly between the 4 prepared sheets of foil. Fold the foil and roll the edges to seal the packets.
Place foil packets on a baking sheet, seam side up. Bake in the preheated oven 30-35 minutes or until the potatoes are tender.
Carefully open the foil pack (the steam will be hot) and turn the oven to broil on high. Broil the packets for 2-3 minutes or until lightly browned or place on a heated grill pan for a couple of minutes if desired.
