Ingredients
Method
- Heat the oven to 375°F and boil the macaroni 2 minutes short of tender; drain.
- Melt butter over medium heat, whisk in flour for 1 minute and gradually add milk.
- Simmer for 3 to 4 minutes, then remove from heat and stir in dry mustard, salt, pepper, 1 1/2 cups cheddar and 1 1/2 cups Colby.
- Fold in the macaroni and spread in a buttered 9-by-13-inch baking dish.
- Top with remaining cheese and bake for 22 to 25 minutes until bubbling and browned at the edges.