Preheat oven to 325 degrees.
Brown bacon in a large skillet and drain most of the fat. Add mushrooms, bell pepper, green onion, garlic, Creole seasoning, and cayenne and cook five minutes. Set aside.
Combine the eggs, half and half, and dry mustard in a mixing bowl. Fold the crumbled biscuits, cheeses and bacon mixture into the eggs. Mix well and place in a buttered two-quart baking dish.
Bake for 40-50 minutes. Allow to rest for 15 minutes before serving.
Yield: 8-10 servings