These eggs are outrageously good. And, even better, they're very easy.
NOTE: Don’t cook more than 24 eggs in each pan or the cooking time will be significantly impacted (ask me how I found out the very hard way.) Cooking 3 – 4 dozen eggs in a larger roasting pan is an entirely different recipe.
In a large bowl, whisk eggs and mix in milk, cheese and seasoned salt. Pour into the greased baking dish.
Continue to bake until eggs are set, stirring every 2 minutes (it will probably take an 5 - 6 additional minutes. Plan on 30 - 35 minutes total.) NOTE: If you are baking more than two 9 x 13 dishes of eggs in the same oven at one time, plan on an additional 5 – 15 minutes depending on your oven and the number of batches. I would not do more than 4 batches in 1 oven.
NOTE: If holding for longer than about 15 - 30 minutes, add 1/4 tsp. of lemon juice (per dozen) to the eggs before cooking. The iron in the egg yolks and the sulfur in the egg whites oxidize with heat and time. The acid in the lemon juice prevents the iron and the sulfur oxidizing, leaving your eggs nice and yellow. By the way, this is the same thing that occurs when you over-cook hard boiled eggs, evident in the grey-green film on the yolk. Contrary to popular myth, it has nothing to do with the pan.
Prior to serving, fluff eggs with a rubber spatula or large spoon by breaking up the larger curd masses into several smaller pieces.