Peel cucumbers and cut in half. Spoon out the seeds and cut the cucumbers into small chucks. With a beater, mix cream cheese, mayo, milk, salt/pepper, and garlic powder. Add cucumbers and green onions. Mix well. Best if served with Cool Ranch Doritos.
Combine eggs with milk. Add remaining ingredients except cereal and butter. Pour into a 10x6x2-inch baking dish. Combine slightly crushed cereal and butter. Sprinkle over top. Bake at 350 degrees for about 50 minutes.