Buy a bag of dried lentils, very cheap and highly nutritious with 25% protein. I use this recipe all the time. If you don’t have an instapot they can boiled on top of the stove, just takes a bit longer (you can soak a cup of lentils overnight in water to speed up cooking time). Goes wonderful on top of a baked potato
https://www.acouplecooks.com/instant-pot-lentils/print/39985/
Thank for posting the entirety of the article.