Step 1: Preheat and Prepare
Preheat your oven to 425°F (220°C). This high temperature is key to achieving that beautiful caramelization. Pat the shrimp completely dry with paper towels—this is crucial for proper browning. Any excess moisture will cause steaming instead of roasting. Arrange the shrimp in a single layer in your baking dish, making sure they’re not overcrowded.

Step 2: Make the Garlic Butter Sauce
In a small bowl, combine the melted butter, olive oil, minced garlic, lemon zest, lemon juice, red pepper flakes, salt, and black pepper. Whisk everything together until well combined. If using white wine, add it to the mixture. The olive oil helps prevent the garlic from burning at high heat while adding extra flavor.

Step 3: Coat the Shrimp
Pour the garlic butter mixture evenly over the shrimp, making sure each piece is well coated. Use a spoon or your hands (wearing gloves) to toss the shrimp, ensuring they’re completely covered in that delicious sauce. The shrimp should still be in a single layer for even cooking.

Step 4: Roast to Perfection
Place the baking dish in the preheated oven and roast for 8-10 minutes, depending on the size of your shrimp. The shrimp are done when they turn pink and opaque throughout, with slightly curled tails. Large shrimp typically take 8-9 minutes, while jumbo shrimp may need the full 10 minutes. Be careful not to overcook—shrimp can go from perfectly tender to rubbery in just a minute or two.

Step 5: Add Fresh Herbs and Serve
Remove the baking dish from the oven (it will be very hot!). Immediately sprinkle the fresh parsley and basil over the shrimp, and give everything a gentle toss to distribute the herbs. The residual heat will release the herbs’ aromatic oils. Serve immediately with lemon wedges on the side and plenty of crusty bread for soaking up that incredible garlic butter sauce. You can also transfer to a serving platter for prettier presentation.