Step 1

Preheat the oven to 400 degrees Fahrenheit.

Step 2

In a large bowl, beat eggs with whole milk, Dijon mustard, salt, and pepper. Then add the cubed ham, bread, and cheese to the egg mixture. Mix well.

Step 3

Spray an oven-proof 9x9 glass casserole dish with cooking spray. Then pour the egg mixture into the casserole dish.

Step 4

Bake in the oven for 30 minutes at 400 degrees.

Step 5

Remove from the oven, let rest for 5 minutes, then cut into squares, and serve immediately.