I'm one of four, and when we were little my mom worked really hard to make sure we had good balanced meals every night that were affordable and included some kind of protein.
Protein isn't always meat.
This is how my family makes spaghetti. It's one of those really weird flavor combinations that you've probably never thought of, but the dairy and acidic tomatoes make a really great combination!
Don't ask, just make. It's healthy!