Preparation:

Step 1: Prepare the Filling

In a medium-sized mixing bowl, combine the breadcrumbs, grated Parmesan cheese, minced garlic, chopped fresh parsley, shredded provolone cheese, toasted pine nuts, a pinch of salt, and freshly cracked pepper. Stir well to ensure all the ingredients are evenly mixed. This filling will form the flavorful core of your beef rolls.

Step 2: Lay Out and Stuff the Beef Slices

Place the thinly sliced beef (flank steak works wonderfully for its tenderness) on a clean, flat surface. Ensure the beef slices are dry by patting them with paper towels. Take a generous spoonful of the prepared filling and place it on one end of each slice of beef. Be careful not to overstuff, as this will make rolling difficult. Spread the filling evenly across the slice to ensure each bite gets a balance of beef and filling.

Step 3: Roll and Secure the Beef Rolls

Starting from the end where you placed the filling, carefully roll up each beef slice tightly. Secure each roll by inserting a toothpick through the center to prevent it from unrolling during the cooking process.

Step 4: Brown the Beef Rolls

Heat 2 tablespoons of olive oil in a large skillet over medium heat. Once the oil is hot, carefully add the beef rolls. Brown the rolls on all sides for 3-4 minutes per side, ensuring an even sear. This step is essential for locking in the flavors and juices before simmering in the marinara sauce.

Step 5: Simmer in Marinara Sauce

Once the beef rolls are browned, pour 2 cups of marinara sauce over the rolls in the skillet. Reduce the heat to low, cover the skillet, and let the rolls simmer gently in the sauce for about 30 minutes. The sauce will infuse the rolls with its rich flavor while allowing the beef to become tender and juicy.

Step 6: Final Touches

After the rolls have simmered and the beef is tender, remove the skillet from heat. Carefully remove the toothpicks from each roll (use tongs or a fork to avoid burning your fingers). Before serving, spoon a generous amount of the marinara sauce over the rolls to enhance the flavor.