Sauté zucchini, peppers, onion and garlic in olive oil with salt and pepper.
After about 5 minutes, add your ground turkey. As it cooks, crumble it into pieces. Feel free to add more pepper or other Italian seasonings to spice it up a bit. Set this veggie/turkey mixture aside when meat is cooked through.
In the crockpot, add a thin layer of marinara sauce, 3 noodles on top of the sauce (you have to break them up into pieces to fit them all), and half of the veggie/turkey mix. Cover that with fresh spinach and mozzarella cheese.
Then, more sauce, 3 noodles, the rest of the veggie/turkey mixture and fresh spinach. The final layer was sauce and mozzarella.
Set the crockpot on low for 4 hours.
Scoop into bowls, top with fresh basil and parmesan cheese and enjoy!