"Like others, I loved this recipe. Maybe 2 onions, and sliced paper thin. I would also cut back to 2 teaspoons of crushed red pepper. I used coarse Kosher Salt for the eggplant. Worked great but be careful to remove it all when you rinse them! Nothing worse than salty eggplant :-). Only needed 3 cups of bread crumbs. Added a little oregano to the tomato sauce. Used crushed San Marzano's and loved the smooth texture. Took much longer to prep than expected, but I did grate the cheese on my own. Worth the effort all around!"