In 2-quart oblong glass baking dish, place cubed bread.
Sprinkle cheese, green onion and mushrooms over bread.
Top with ham cubes.
In small mixing bowl, beat together eggs, milk, dry mustard, pepper and hot sauce.
Pour egg mixture over bread, cheese and ham.
Cover with wax paper.
Microwave at high (10) 2 to 4 minutes.
Microwave at medium (5) 6 to 9 minutes until nearly set.
Let stand 5 minutes before serving.