Re: Dinner for friend with no onions/peppers/spice
My husband is allergic to onions. I make all the regular foods everyone else makes but simply skip the onions. The exception of course would be onion soup, leak soup, or anything that is basically one item plus onions such as liver and onions.
So spaghetti, lasagna, chicken soup, cream soups, beef stew, tuna casserole, etc. Onions are not necessary for a good meal.