Creating a delightful Sheet Pan Shrimp Boil is as straightforward as following these simple steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare the Sheet Pan: Line a large baking sheet with parchment paper for easier cleanup.
3. Combine Vegetables and Sausage: In a large bowl, toss the halved potatoes, corn pieces, and sliced sausage with olive oil, Old Bay seasoning, garlic, salt, and pepper until well coated.
4. Spread on Sheet Pan: Pour the mixture onto the prepared sheet pan in an even layer.
5. Bake Potatoes and Sausage: Place the sheet pan in the oven and bake for 15 minutes, allowing the potatoes to start cooking.
6. Add Shrimp: After 15 minutes, remove the pan from the oven. Add the shrimp on top of the other ingredients in a single layer.
7. Return to Oven: Bake for another 8-10 minutes, or until the shrimp are pink and opaque, and the potatoes are tender.
8. Garnish: Take the pan out of the oven. Squeeze fresh lemon juice over the entire dish and sprinkle with chopped parsley, if using.
9. Serve: Serve the Sheet Pan Shrimp Boil directly from the pan for a rustic presentation.

By following these straightforward steps, you’ll have a mouth-watering dish ready to impress your family and friends!