Preheat Oven: Preheat your oven to 400°F (200°C) or heat a grill to medium-high heat.

Assemble Foil Packs: In a large bowl, toss the shrimp, potatoes, corn, and sausage with olive oil, Cajun seasoning, garlic, salt, and pepper. Divide the mixture evenly between 4 large pieces of aluminum foil.

Seal Packs: Fold the foil over the ingredients and seal the edges tightly to create a packet.

Cook: Place the foil packs on a baking sheet and bake for 25-30 minutes, or grill for 20-25 minutes, until the potatoes are tender and the shrimp are cook