In a medium sauté pan, cook peppers and onion until they start to become tender. Season with salt, pepper, seasoning and crushed red pepper. Set aside.
In a half hotel pan, spray with non-stick spray. Ladle about ½ cup marinara on the bottom, evenly coat bottom.
From frozen, evenly layer 12-16 pieces of ravioli to fit the hotel pan.
Layer the pepper and onions on top. Ladle about 1 cup marinara over top. Top with half of the parmesan cheese and half of the mozzarella.
Add another layer of ravioli to evenly cover the peppers and cheese.
Combine remaining 1-2 cups of marinara with heavy cream. Top with 1-2 cups of marinara to evenly cover all ravioli.
Add remaining parmesan and mozzarella. Sprinkle fresh topped parsley over top.
Cover with foil and keep refrigerated until ready to bake.