Creamy Spicy Mac `n Cheesy

• 3 C. Skim Milk
• 1/2 C. All-Purpose Flour
• 1/2 Medium Yellow/White onion, finely diced
• 4oz Cheddar Cheese
• 4oz Pepper Jack Cheese
• 1 tsp. Ground Mustard
• 1/2 tsp. Ground Black Pepper
• 1-1lb pkg. Noodle of Choice *I prefer Penne or Rotini*

Start boiling your noodles with a little bit of salt in the water.  At the same time, in a medium saucepan, add the milk, diced onion, and flour.  Whisk briskly to break up all clumps and dissolve the flour.  Turn the heat to medium and keep stirring.  As the flour starts to cook, keep whisking.  When the sauce starts to thicken, add the cheese, ground mustard, and pepper.  Drain the noodles when they become al dente, and toss in the cheesey sauce.

Optional: Cover in about 1/4 C. of breadcrumbs, and bake at 350F until a crust forms.