I layered cheese ravioli with sauce, moz.cheese and Parm cheese and baked it in the oven. You were all making me hungry for lasagna and I didn't have ricotta or cottage cheese. I was pleased with the result!
We do that at a few of our units, basically by popular demand. People LOVE Ravioli Pie, it's all the goodness of lasagna, in a different presentation. Same can be done with tortilini, and a hearty ragout, or meat sauce.