Potato, Spinach, Egg Bake
Nothing has changed in my quest to use what is on hand. I buy Costco sized bags of potatoes and onions which means, it is a rare day that I don't have these two waiting to be used. Onions are probably the most used vegetable in our home. Since, I can't use garlic, I add onions to everything or a member of that family. It has become a habit when starting a new recipe to take out he onions. Doesn't work too well for cake though. OK, I'm kidding.
Salads, casseroles, meat, dairy......what can't be improved with onions.
Varieties of onions are recommended for certain recipes. They come in varied colors and textures. They can be stored for weeks in a cool dark area. Bottom line is though, you can substitute different onions for almost any recipes.