Preheat oven to 275 degrees.

Heat 1 tablespoon olive oil in a small skillet over medium heat.

Add chopped onion, garlic and flat parsley. Saute until softened. Add breadcrumbs and remaining olive oil.

Toss until it is fully mixed and pasty.

Remove from heat and add Parmesan cheese. Set aside.

On a cutting board, place 1-2 tablespoons breadcrumb mixture on the short edge. Roll up, folding in the edges like an envelope.

Place, seam side down, in an oven safe skillet.

Repeat with remaining filets.

Brown beef rolls over medium heat.

In a separate bowl, combine tomato sauce with dried oregano.

Top beef rolls with tomato sauce.

Place in oven, uncovered, for 45 minutes.

Remove and allow to rest for 5 minutes before serving.

If you've tried this recipe, come back and let us know how it was!