Baked Macaroni and Cheese

2 cups macaroni
3 tablespoons butter
3 tablespoons flour
1 teaspoon dry mustard
3 cups milk
1/4 small onion, chopped
1 bay leaf
1 egg, beaten
3 cups cheddar, shredded
salt and pepper
water

1. Preheat oven to 350 degrees.
2. Bring a large pot of salted water to a boil and add the macaroni, cooking until just tender. Drain.
3. Meanwhile, melt butter in a sauce pan over medium heat. Whisk in flour and mustard and continue to whisk until smooth.
4. Add the milk, onion and bay leaf to the butter and flour and simmer until onion is tender, about 10 minutes. Remove the bay leaf.
5. Remove the milk mixture from the heat and stir in the egg and 3/4 of the cheese.
6. Season the cheese sauce to taste with salt and pepper and stir in the macaroni.
7. Transfer the macaroni and cheese to a casserole dish and top with the remaining cheese.
8. Bake until cheese has melted and starts to crisp, about 25-30 minutes.

Makes 4 servings