Here’s another recipe just in case my previous one was too easy.
3 large zuchinni
12oz grated parmesan cheese (2cup package)
12oz grated mozzarella cheese (2cup package)
1 medium onion (diced)
Slice zuchinnii and cover bottom of casserole dish (9×13 pan). Sprinkle part of diced onion on top of zucchini. Sprinkle Italian seasonings, garlic salt and mozzarella cheese. Make another layer and top with parmesan cheese. You might like to add a very thin sliced tomato on top of the cheese to add color. Cover casserole with foil and bake for 1 hour at 375. After about 45 minutes take off foil and let top brown.