Prepare the Lobster: Begin by thawing the lobster tails if frozen. Use kitchen scissors to cut along the top of the shell, exposing the meat. Carefully lift the lobster meat out slightly, keeping it attached at the base. This helps it cook evenly and allows for better presentation.
Make the Butter Sauce: In a medium saucepan over medium heat, melt the unsalted butter (1/2 cup). Once melted, add the minced garlic (4 cloves) and sauté until fragrant, about 1-2 minutes, being careful not to burn it.
Add Herbs and Lemon: Stir in the fresh parsley (1/4 cup) and fresh lemon juice (2 tablespoons). Season the sauce with salt and pepper to taste, allowing the flavors to meld together for an additional 1-2 minutes.
Cook the Lobster: In a large skillet, place the lobster medallions cut side up and pour half of the garlic-herb butter sauce over them. Cook on medium heat for 5-7 minutes, basting with the sauce occasionally, until the lobster is opaque and cooked through.
Finish with Sauce: Once cooked, remove the skillet from heat. Drizzle the remaining garlic-herb butter sauce over the lobster medallions before serving. This adds extra richness and flavor.