Begin by drying the shrimp with a paper towel, then set them aside.
In a large skillet, combine the butter and olive oil, heating over medium-high heat. Once melted, add the garlic and cook for 30 seconds to 1 minute, stirring until the garlic becomes fragrant and lightly golden.
Pour in the white wine or broth, then add the salt, red pepper flakes, and black pepper. Turn the heat up to high and let the mixture boil, reducing the wine by half, which should take around 2 minutes.
Add the shrimp to the skillet and cook until they become pink, which should take about 2 to 4 minutes.
Finish by adding the parsley and freshly squeezed lemon juice. Stir everything together, then remove the skillet from the heat.