Add ingredients to a 9 x 13 casserole dish in the following order: ½ cup sauce, layer of zucchini noodles, ½ cup sauce, 1 cup turkey, ½ of guacamole, layer of zucchini noodles, ½ cup sauce, 1 cup turkey, chopped onions, ½ cup shredded cheese, layer of zucchini noodles, ½ cup sauce, 1 cup cheese.