Remember.. you do have flex points that you can use, unless you have included them already with your daily point intake. If you spread them out through the week that is an extra 5 points per day. 5 points can be a whole meal!
If you are already using your 5 FP's per day, try incorporating more veggies and fiber into your other meals along with a big glass of water. This will help 'fill you up' then, and if you are hungry later, you will still have points left.
Edited to add... I have those steam in the bag veggies that can just be cooked in the microwave. If I am really hungry at night, I can eat the whole bag without worry and I am satisfied. They are hot, a little crunchy and taste really good to me. I especially like the broccoli.