We have a weekly meal calendar that we follow. You can see those details in this post.
Mondays we have stir fry - this week it consisted of rice, hamburger, and Mexican street corn.
Tuesday night is tacos. This week we did straight tacos, beef with taco seasonings, lettuce, tomato, sour cream and shredded cheese.
Both meals had just a bit left in the pan - this happens when our oldest still at home eats at work. There is just about enough for one adult serving.
Wednesday is soup night.
I can get these in various flavors for about $2.50.
I follow the directions on the package and then add to the crock pot in the morning. I also had a bit of homemade salsa left in the frig and added that as well.
I will serve it with bread and butter for dinner.
Altogether, it will feed the eight of us who are usually home for dinner for less than $5, and that is a definite Frugal Win.