Ingredients

1 pound lean ground beef (90% lean)1 small red onion, chopped2 garlic cloves, minced1 can (15 ounces) tomato sauce1 teaspoon dried oreganoRomaine leaves6 kaiser rolls, split and toasted1/2 cup crumbled feta cheese

Preparation

In a large skillet, cook beef, onion and garlic over medium heat until beef is no longer pink, 6-8 minutes; crumble beef; drain. Stir in tomato sauce and oregano. Bring to a boil. Reduce heat; simmer, uncovered, until sauce is slightly thickened, 8-10 minutes, stirring occasionally.

Place romaine on roll bottoms; top with meat mixture. Sprinkle with feta cheese; replace tops.