Heat a large skillet over high heat.
Add the olive oil and red pepper flakes and allow the spice to infuse into the oil for 30 seconds.
Add the shrimp to the pan and spread it out so it cooks evenly. Cook for about 1 minute flipping as needed.
Add the garlic, lemon juice, and caper brine to the skillet and let cook for 1 minute.
Add 1/2 of the parsley along with the cubes of butter and swirl the pan so butter starts to melt slowly, about 2-3 minutes. As the butter melts it should start forming a thick type of sauce
Add the remaining parsley and stir to combine.
The shrimp should be opaque and cooked through.
If the sauce starts to thicken too much, you can remove the shrimp to a serving dish and add a teaspoon of water to help thin it out to a pour-able consistency.
Keep in mind that this recipe creates just enough sauce to coat the shrimp.