Note: This recipes uses a pre-cooked ground beef, chopped onions, and garlic mixture, sautéed in marinara sauce. Make this the night before for dinner, by cooking 1 pound of ground beef in a pan over medium high heat, until it browns. Add 3/4 cup marinara sauce, 1/3 chopped onion, and 1 chopped garlic clove to the pan and simmer for 10 minutes. Store the beef mixture leftovers overnight in the fridge, then add 2 oz of the leftovers to this open-faced omelette recipe.