This is a great recipe for the holidays because you make it the night before and let it sit overnight in the refrigerator. Then in the morning, just pop it in the oven. And leftovers just have to be reheated in the microwave.
- Lightly coat a 9 x 13-inch baking dish with canola cooking spray. Add sausage and mushrooms and canola oil to a large, nonstick skillet and cook over medium-high heat, stirring often, until nicely browned (about 5 minutes).
- Add bread cubes and half of the cheese to the skillet with sausage mixture and toss to blend well. Pour mixture into the prepared baking dish. Top with remaining cheese.
- Add eggs and ground mustard to large mixing bowl and beat on medium speed to blend. Add egg substitute, half and half, salt and pepper to bowl and beat until smooth. Pour egg mixture over bread cube mixture. Cover dish and refrigerate at least 8 hours or overnight.
- Preheat oven to 350-degrees. While preheating oven, remove casserole from refrigerator (about 20 minutes before baking). Bake about 45 minutes or until a knife inserted in the center comes out clean. Let stand 10 minutes before serving.!