Slice potato, tomato, zucchini, yellow squash, and onion into 1/4 inch slices; mince garlic. Add veggies to an 8X8 inch baking dish; sprinkle with garlic.
In a skillet, cook ground turkey over medium heat. Stir occasionally to crumble into smaller pieces. When turkey is no longer pink, spread over veggies. Sprinkle with grated cheese and breadcrumbs. Cover with foil and bake for 30-40 minutes. Check potatoes for doneness; they should be fork tender.