Instructions:
- Place the butter in a saucepan on medium heat.
- Add the flour to the melted butter and stir for 1 minute
- Slowly add in the milk and the half and half, ground mustard, salt and pepper, whisking as you add each
- Remove from the heat and add in the shredded cheese a little at a time.
- Continue stirring as you add the cheese
- Drain and rinse the elbow macaroni and place back into baking dish
- Carefully pour the cheese mixture over the macaroni
- Stir to mix well
- Mix the ingredients for the topping in a separate bowl and sprinkle on top of the macaroni and cheese
- Cover the baking dish with aluminum foil
- Bake at 350* for 40 to 45 minutes
- Remove the foil from the dish and return to the oven to broil the top for a minute or two.
- Let stand for 5 minutes before serving.
Enjoy!