A lazy Saturday, grey skies outside, and you have zero desire to watch a pot for two hours. That’s exactly why this lasagna exists. You assemble it in fifteen minutes, put the lid on, and three hours later you have a dish that tastes like you spent the whole afternoon on it.

The cheese on top is a creamy white with golden spots like light caramel around the edges. Underneath, the ravioli have puffed up in the sauce—tender to the core, soaked in both tomato and meat juices. The sauce itself has transformed from a bright red to something deeper, almost brown at the edges where it caught the sides of the slow cooker. When you lift the lid for the first time, the oregano hits you first, then a sweet, caramelized note of long-cooked tomato.