Remove the tenderloin from the package and sliced 4-5 cuts down the back of the tenderloin. Don't cut all the way through.
In each slit add pepperoni and a slice of mozzarella cheese.
Place one (or both if your package had 2 tenderloins) in a baking dish just big enough to fit the tenderloin. It should help hold everything together while cooking. I used a 5x13 dish.
Drizzle the top with olive oil and sprinkle with the dry herbs.
Bake at 375 for 35-45 minutes until the internal temperature is 165F.
Enjoy with marinara and fresh basil.