To prepare the pesto and cheese stuffed pork tenderloin recipe, you'll first need to prepare your ingredients. In a large bowl, mix together 1 tablespoon of olive oil, 1 teaspoon of salt, and 2 teaspoons of pepper. Add the shredded cheese and toss to coat. Cover the mixture with plastic wrap and refrigerate for at least 1 hour. While the meat is resting, make the filling by mixing together 2 tablespoons each of ricotta and mozzarella cheeses. Place the cheese mixture in the center of the pork and roll it up tightly with the plastic.