The concept is simple. You make a bigger-than-you-need (but still fast and easy) dinner, then you stash the leftovers. In the morning, those leftovers get transformed into a delicious lunch, no heavy lifting needed. In this case, that dinner is a flank steak marinated in garlic and red wine vinegar.

On Day 1, you serve the steak with skillet-seared spinach. If you’re feeling ambitious, some mashed potatoes would be nice, too. On Day 2, you take thin slices of the leftover steak and slap them onto crusty bread with mustard or into a whole-wheat wrap with a bit of fresh greens and maybe some mayonnaise or barbecue sauce.