I had the "What do I make for dinner?" conundrum too, and wound up making my own web app to address that. The main thing for me was that I couldn't think of any recipes, other than ones I'd already made very recently.
So mine is kind of a diary, in that I record whatever we make today, and then I can see what we've made over the last couple of years, and get inspiration that way. It also has a "Future" list, where I can add things I want to make in the future.