Soak the lasagna noodles in hot water for 5 minutes. Drain the water and replace with additional hot water. Soak the lasagna noodles in the new hot water for an additional 5 minutes. Drain the water again. Dry off the lasagna noodles with a paper towel
Place a 33 x 22 cm (13 x 9 inch) baking dish on a cookie tray and wrap the sides with aluminum foil to reduce spillage
Spread 1/6 of the ragù on the bottom of the baking dish. Next, spread 1/6 of the besciamella on top of the ragù. Then, place three lasagna noodles on top
Spread 1/6 of the ragù on the lasagna noodles. Next, spread 1/6 of the besciamella on top of the ragù. Then, spread 1/6 of the Parmesan cheese on top. Finally, place three lasagna noodles on top of that
Spread 1/2 of the ricotta mix with a spatula. Then spread 1/6 of the ragù, 1/6 of the besciamella on top of the ragù, and 1/6 of the Parmesan cheese on top of that. Place three lasagna noodles on top
Spread 1/6 of the ragù, 1/6 of the besciamella on top of the ragù, and 1/6 of the Parmesan cheese on top. Finally, place three lasagna noodles on top of that
Spread the remaining 1/2 of the ricotta mix with a spatula. Spread 1/6 of the ragù, 1/6 of the besciamella on top of the ragù, and 1/3 of the Parmesan cheese on top of that. Place three lasagna noodles on top
Finally, spread the remaining ragù, the remaining besciamella and remaining Parmesan cheese on top
Cook for 45 minutes at 190 degrees C (375 degrees F)
Remove from the oven and let the lasagna sit for 10 minutes