I think 3-4 layers of noodles makes an excellent lasagna. Since my box of noodles came with 15 noodles, I decided to do 3 layers, each consisting of 5 noodles. I used 4 noodles side by side, and broke up the 5th noodle to fill in the empty spots on the side of the pan. Check out the graphic above for easy layering instructions.