Step 1

In a bowl whisk together brown sugar, salt, paprika, pepper and garlic powder

Step 2

Rub the tenderloin with the seasoning until evenly coated

Step 3

Cook the tenderloin: Oven: Preheat oven to 400° Place rack in the middle

Step 4

Heat 1-2 tbsp olive oil in oven safe skillet (or cast iron skillet)

Step 5

Add tenderloin to the pan and cook until it is evenly browned on all sides (5-6 minutes)

Step 6

Place the pan in the oven and bake for 15 more minutes, flipping the meat once halfway through

Step 7

Bake until the internal temperature reads 145° F

Step 8

Grill: Heat grill or grill pan to medium-high heat

Step 9

Grill pork, turning occasionally with tongs, until charred and a thermometer inserted into the thickest part of the tenderloinreads 145, about 20 minutes

Step 10

(For larger tenderloins, bake in a 400º oven for 15 to 25 minutes more, until desired internal temperature is reached.) Transfer to a cutting board and let it rest for at least three minutes.Slice and serve.