Measure out and prepare all of the ingredients. Preheat oven to 350F.

Butterfly the pork loin with a knife.

Using a mallet, beat the loin and sprinkle it with salt and pepper to taste.

Spread the pesto evenly over the top of the pork loin.

Sprinkle the cheese over the pesto.

Layer the prosciutto on top of the parmesan cheese.

Roll the pork loin.

Tie with twine to hold it together. Drizzle the olive oil over the top of the meat. Put it on a baking dish.

Place the brussels sprouts on a baking sheet, drizzle with olive oil and season with salt and pepper.

Cook the loin next to the brussels sprouts in the preheated oven for 45 minutes. Watch the brussels sprouts and make sure they don't brown. Then turn the broiler on (remove the brussels sprouts beforehand) and let the loin sit for another 10 minutes. Let cool slightly before untying the twine.

Slice, serve alongside the brussels sprouts. Enjoy!