1-First Step: Preparation Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper or aluminum foil for easy cleanup. If your shrimp are frozen, thaw them completely and pat them dry with paper towels. This ensures they roast properly rather than steam. Cut the corn into pieces, slice the sausage, halve the potatoes, and chop the vegetables as indicated in the ingredients list.

2-Second Step: Season the Potatoes and Corn On your prepared sheet pan, combine the baby potatoes and corn pieces. Drizzle with 2 tablespoons of olive oil and sprinkle with 1 tablespoon of Old Bay seasoning. Toss well to coat evenly. Spread these vegetables in a single layer on one side of the pan. These ingredients need a bit more time to cook than the shrimp, so we’ll start them first.

3-Third Step: Roast the Sturdy Vegetables Place the pan in the preheated oven and roast for 15 minutes. This head start ensures that the potatoes become tender and the corn develops a nice sweetness without overcooking the delicate shrimp. While these are cooking, prepare the remaining ingredients for the next step.

4-Fourth Step: Add Sausage and Vegetables Remove the pan from the oven temporarily. Add the sliced andouille sausage, red bell pepper, and red onion wedges to the pan. Drizzle these additions with the remaining 2 tablespoons of olive oil and another tablespoon of Old Bay seasoning. Toss everything together gently to distribute the seasonings evenly. Spread all ingredients in an even layer, ensuring everything has space to roast properly without being overcrowded.

5-Fifth Step: Continue Roasting Return the pan to the oven and roast for another 10-12 minutes. You’ll notice the sausage beginning to brown at the edges and the vegetables softening. The kitchen should already be filled with wonderful aromas as the flavors start to meld together in the oven’s heat.

6-Sixth Step: Add the Shrimp Carefully remove the pan from the oven again. Add the peeled and deveined shrimp to the pan along with the minced garlic. Sprinkle with the remaining tablespoon of Old Bay seasoning. Arrange the lemon slices over the top of the entire dish. The lemon will release its juices during roasting, adding a bright, acidic element that balances the richness of the sausage and Old Bay seasoning.

7-Final Step: Finish and Serve Return the pan to the oven for the final 5-8 minutes of cooking, or until the shrimp turn pink and opaque. Be careful not to overcook the shrimp, as they can become rubbery. Remove from the oven and drizzle with the melted butter and fresh parsley. Serve directly from the sheet pan family-style, or portion onto individual plates. This dish pairs wonderfully with crusty bread to soak up the flavorful juices, or with a light salad for a complete meal.