Ingredients :

• Frozen cheese ravioli — The base of the dish—and their frozen state is an advantage, not a constraint. They cook slowly in the sauce, gently absorbing flavors and avoiding becoming pasty. A 565 g (20 oz) package is the standard size for a 6-person dish. If your package is 700 g, add an extra cup of sauce to maintain the right balance between layers.
• Turkey sausage meat — It replaces classic pork sausage without compromising on taste. Lower in fat, yet the savory depth remains—built-in seasoning, a hint of fennel, a little paprika. Choose mild or spicy as you prefer. Crumble it well in the pan so the sauce is homogeneous and every layer is uniform.
• Marinara sauce — Use a thick sauce. A sauce that is too liquid will soak the bottom of the dish and the layers won’t hold together. If yours is a bit thin, let it simmer uncovered for 5 minutes in the pan with the sausage before assembling. It will reduce, concentrate, and the difference will be visible when slicing.
• Mozzarella — Grate it yourself from a block if you want long, stretchy cheese pulls. Pre-shredded mozzarella in bags contains anti-caking starch—it melts okay, but stretches less. Both work; it’s just a matter of what you want to see on your plate.