I'm currently on a kick where I'll make a lot of one thing and eat it day in and day out until I can't stand it any more. It helps with time and I get to perfect it instead of making an attempt at a different thing every night.
So right now, my go-to dinner is homemade tomato soup with grilled cheese sandwiches.
Tasty, satisfying, inexpensive, quick to prepare, and you get a full serving of vegetables in there as well.
So the only thing I'm missing is a protein. Sure, there's a bit in the cheese, but definitely not enough to make a good weeknight dinner. But that's the problem: what (inexpensive) protein source goes well with tomato soup and cheese? Some sort of bean preparation? Chicken?