I had bought some frozen ravioli and had planned to make Lasagna Ravioli in the slow cooker, but forgot to put it on in time.  So I decided to make a casserole in the oven instead. My guys like a lot of meat so I went with a meat lover pizza theme. I filled a large pot with water and brought it to a boil. I then placed the frozen ravioli in the boiling water and boiled the ravioli according to the directions on the bag. While I was waiting on the ravioli, I gathered all my other ingredients and poured about 1/3 of a jar of garlic and onion…