Place your pieces of bread flat in a 9x13 casserole dish. You might have to squeeze them in, but they'll fit.
Add the cheese. You will notice I didn't state a measurement for the cheese. That is because I just shake the bag and when it looks good to me, I stop. They are really very few occasions in life where you can add too much cheese.
Stick it in the oven for approximately 25 - 30 minutes**.
It should look similar to this. The bread should be slightly crisp on the edges and you will need to make sure the egg is fully cooked and the cheese is properly melted throughout.
Since I ruined the sausage, I made the dish sans meat and had some kielbasa on the side.