01 - 
                Preheat the oven to 350°F (175°C) to ensure an even and gentle roast for the shrimp.
              
              
              
                02 - 
                Place the butter in a microwave-safe bowl and heat until just melted to prevent scorching.
              
              
              
                03 - 
                Pat thawed shrimp thoroughly dry with paper towels for optimal caramelization.
              
              
              
                04 - 
                Gently toss the shrimp in the melted butter until evenly coated.
              
              
              
                05 - 
                Sprinkle the dry Italian dressing mix over the buttered shrimp and fold to coat each piece.
              
              
              
                06 - 
                Arrange the lemon slices in slightly overlapping layers across the bottom of a glass baking dish.
              
              
              
                07 - 
                Spread the seasoned shrimp and any remaining butter over the lemons in a single layer, avoiding crowding.
              
              
              
                08 - 
                Bake in the preheated oven for 20 minutes, or until the shrimp curl, turn pink, and are opaque.
              
              
              
                09 - 
                Allow shrimp to rest for several minutes before serving to let juices redistribute and flavors settle.