Start by ensuring your shrimp are peeled and deveined. Mince the garlic and chop the parsley, setting everything aside. This prep work will streamline the cooking process.
In a large skillet over medium heat, melt 1 tablespoon of butter. Allow it to bubble slightly but not brown.
Add the minced garlic to the skillet and sauté for about 1 minute, or until it becomes fragrant. Be careful not to burn the garlic, as it can turn bitter.
Add the peeled and deveined shrimp to the skillet. Cook for 2-3 minutes on one side until they turn pink, then flip them over to cook the other side for another 2-3 minutes.
Once the shrimp are cooked through, squeeze in the lemon juice and sprinkle with red pepper flakes if you desire a bit of heat. Stir everything together to combine.
Remove the skillet from heat and add the remaining 2 tablespoons of butter to the shrimp. Stir until the butter is melted and coats the shrimp. Toss in the chopped parsley for a fresh finish.
Transfer the garlic shrimp to a serving platter and enjoy immediately. This dish pairs beautifully with rice, pasta, or a simple green salad.