Grease or oil a 9 inch round or square oven-safe dish that is about 2 1/2 inches deep.
Prepare all ingredient prior to making layers in the oven-safe dish. Place a layer of spinach on the bottom, followed by a layer of cauliflower florets, and a layer of onion
Sprinkle 1 cup of the cheese over these layers and 1/2 of the spices.
Beat 2 of the eggs in a small bowl and pour evenly over this mixture.
Finally, place 1/2 of the diced ham on top.
Repeat the above steps to make a second layer
Top the ham with the remaining cup of cheese and bake the casserole uncovered at 350 F for 30 minutes
At the end of the cooking time, brown the top under a broiler for 2 to 3 minutes.
Watch this closely so you don't burn the top