Traditional Lasagna

Why This Traditional Lasagna Works

During cooking, the onion and garlic soften in the olive oil and lose their sharp bite. By the time the beef and pork brown, the pan is hot and the meat forms little browned bits that give the sauce a deeper taste. As the crushed tomatoes and tomato paste simmer with the herbs, the liquid slowly cooks off and the sauce thickens so it can sit between the noodles without running all over the dish.

In the bowl, the egg ties the ricotta, parsley, and Parmesan together. Once it bakes, that egg sets and keeps the cheese layer from oozing out the sides. While the lasagna is in the oven, the noodles soak up some of the tomato sauce and soften even more, so the layers cling to each other instead of sliding apart. The mozzarella on top melts, then starts to bubble and brown, forming a stretchy, golden lid that holds everything underneath. After baking, the 15-minute rest lets the sauce settle and firm up, so neat slices hold together on the plate.

Mistakes To Avoid

Boiling the noodles until they are very soft instead of just tender makes them tear when layered and turn mushy in the oven. Once they bake in sauce, they keep absorbing liquid and lose their shape, so the lasagna slices collapse and the layers slide apart.

Letting the meat sauce simmer for much less than the 30 minutes leaves it thin and watery. In the oven, that extra liquid seeps out around the edges and into the bottom, so the lasagna bakes up soupy instead of holding firm squares.

Skipping the egg in the ricotta mixture keeps the cheese layer loose and runny. As it heats, the ricotta spreads out instead of setting in place, so the middle of the lasagna feels soft and can ooze out when cut.

Cutting into the lasagna right out of the oven instead of letting it rest means the hot sauce and cheese are still moving. The layers have not had time to tighten up, so the first pieces come out messy, with filling spilling over the plate.