I first started making Swedish Meatballs when I began to be unable to tolerate tomatoes. I've since written a recipe for Spaghetti Sauce without Tomatoes and although I can now once again enjoy Spaghetti and Meatballs, I still like to have Swedish Meatballs in Sauce as well.
Making GF bread crumbs comes with a number of caveats. Save your bread ends in the freezer, don't use stale bread dry it out, cube it first before drying it out. This gluten free bread crumb recipe is quick and easy and repurposes otherwise wasted over priced gf bread ends!
A great substitute recipe for lasagna that is both free of animal products and wheat gluten. I make mine using a tomato free sauce but regular tomato sauce works just as well. (Oh, and if you are only looking for lactose/dairy free lasagna then you are free to add meat sauce as well!)