Step 4
Build lasagna: Spray an 8" springform pan with cooking spray. Spread 1/4 cup marinara in the bottom of the pan. Add a layer of noodles, trimming to fit the pan, then top with 1/2 the ricotta mixture. Add 1/2 the meat mixture and sprinkle with 1/2 cup mozzarella. Add another layer of noodles, then add the remaining ricotta mixture and meat sauce in even layers. Top with more noodles, remaining 1/4 cup marinara, and remaining mozzarella.