Cheese Dressing (or Stuffing)

This is another one of Dena's recipes. She tells me her family are not generally stuffing eating folk, but this cheesy recipe is devoured and she's asked to bring it year after year! I can't wait to try it.

2 boxes Mrs. Cubbins Herbed Dressing (do not use the crumbs at the bottom)
2 cups hot water (use just enough to moisten bread)
5 eggs (stir in bowl to break up yolks)
1 large onion (diced small)
1 1/2 lbs cubed mild cheddar cheese
2 cans evaporated milk
1 lb melted butter

Moisten boxed dressing, fold in the rest of the ingredients until mixed. Bake in a 9x13 baking dish at 350 for 1 1/2 hours. Do not cover so the top will be crunchy.