Preheat the oven to 350 F and grease with butter the bottom of a 9 x 13 casserole dish.

In a large mixing bowl, whisk thoroughly eggs, milk, salt and black pepper. Pour mixture into the prepared casserole dish and bake at 350˚F for 18-20 minutes or until fluffy and not wet on top. Remove from the oven and cool for about 5 min in the pan then cut into 12 equal squares or use a large round cookie cutter to cut out 12 circles.

Set the oven to broil on high heat. Cut English muffins into halves and butter the cut side and place the cut side up on a rimmed baking sheet. Broil in the center of the oven for 2-3 minutes or until the tops are golden and lightly crisp. Remove from the oven.

Assemble the breakfast sandwiches starting with the bottom bun first, then the egg, followed by a slice of cheese, and a slice of ham and finally the top bun.

If freezing, wrap tightly in plastic wrap then place in a large freezer-safe Ziploc bag and refrigerate up to 1 week or freeze up to 2 months.