I had made something similar to this before, and lost the recipe. This is a great, easy-ingredient recipe. I substituted the ground beef with a package of 1.25 lb extra-lean ground turkey (I don't use ground beef). Originally I used a 9x9 pan as the recipe calls for, but that was way too small. I put it in a regular 9x11 pan and that was much better. The smaller pan bubbled over and was too full. This is also easy to make and put in the fridge for heating up later, just make sure you add extra time in the oven to account for the refrigerated pan and contents. I added 15-25 mins. baking time and that seemed to be fine.