- Preheat oven to 375 degrees F. 
- Rinse zucchini, pat dry and slice lengthwise into strips about 1/8" thick. 
- Dice onion and mince garlic. 
- Heat olive oil over medium heat and add onion, sauté for 1-2 minutes 
- Add ground beef and garlic to skillet and cook until meat crumbles and is cooked through. Drain. 
- Stir in pasta sauce, Italian seasoning, pepper flakes and fresh basil and set aside. 
- In a separate bowl combine ricotta cheese, egg, 1 cup shredded cheese blend, 1/2 cup parmesean, salt and pepper. 
- In the bottom of a deep dish 8x8 baking dish (2.5 qt), spread 1/4 cup of the pasta sauce mixture. 
- Top with 5-6 slices of zucchini. 
- Then, top with 1/3 marinara beef mixture and 1/3 ricotta mixture. 
- Add another layer of zucchini and repeat with remaining ingredients for 2 more layers. 
- Top with remaining Italian cheese and parmesan cheese. 
- Spray a large piece of aluminum foil with cooking spray and tent the foil on top of the pan to prevent the cheese from sticking. 
- Bake at 375 degrees for 40 minutes, covered. 
- Remove the foil and bake 5-10 minutes more until cheese is lightly golden. 
- Let stand 10 minutes before serving. Serves 6-8.