Heat a large cast iron skillet over medium heat. Add the olive oil.
Season all sides of the pork tenderloin with salt and pepper.
Sear all sides of the pork tenderloin, allowing each side to brown for 2-3 minutes before turning.
Transfer the cast iron skillet to the oven and bake the pork tenderloin for 25-30 minutes, or until the internal temperature is between 145-150 degrees.
Allow the pork to sit for 5-10 minutes before slicing.
Serve with the Raspberry-Jalapeno Sauce.
Raspberry Jalapeno Sauce
Add all of the ingredients for the sauce to a saucepan over medium heat.
Allow the sauce to cook for 15-20 minutes until the raspberries have broken down and it has thickened and reduced.