Preheat your oven to 400°F (200°C) to ensure even cooking.

Rinse the clams under cold water, scrubbing them gently to remove any sand or debris. Discard clams that do not close.

On a large sheet pan, spread the baby potatoes, sweet corn, clams, and shrimp in an even layer.

In a mixing bowl, combine melted butter, minced garlic, Old Bay seasoning, salt, and pepper. Drizzle over the ingredients on the sheet pan.

Bake for about 30 minutes until the clams open and shrimp turn pink. Watch for doneness.

Remove from the oven and garnish with fresh parsley and lemon slices. Serve directly from the pan.