Prepare Fishless Fillets according to package directions (bake 10-12 minutes at 425 degrees).
While fillets bake, prepare the slaw: Toss the cabbage, carrots, green onions, tomato and the juice of 1 lime in a bowl. Sprinkle with salt and taste for seasonings.
When fillets are ready, heat one tortilla at a time on a stove burner, until the tortilla becomes pliable. Chop the fillets into small pieces. Spoon some of the slaw into each tortilla with about half of one fillet. Add in a few avocado slices, and top with a dollop of the tartar sauce.