Easy meal for 2: Minced Beef and Veggies over Cousous

After such heavy meals and large portions my husband and I are working to curb our increased appetite, and one of the ways to do that is to cook just enough for two portions without leftovers. We try to be self-disciplined to only eat the portion size that we should but we are often guilty of cleaning up the dish. So I am often experimenting with easy meals that only cook up enough for the two of us. This dish came from me trying to use up an odd assortment of veggies that I had leftover from two other recipes. What are tricks that you have come up with to try to make sure that you don't over eat?