Best Mac-n-Cheese EVER

I found this recipe on the Sprizee blog (http://sprizee.typepad.com/) and decided to try it. I have made a few adaptations from her original recipe. 1/4 cup butter 1/4 cup flour 2 cups milk, warmed in the microwave for 1 minute 1 tsp. salt 2 cups shredded cheese 8 oz. pasta (Penne or Cavatappi works well) Cook and drain pasta. Melt butter over low heat, gradually add flower, whisking until smooth. Keep whisking and cook 1 minute. Increase heat to medium and gradually add milk. Cook until it's bubbly. Keep whisking. Add salt and cheese. Whisk until cheese melts. Put in 8x8 pan and cover with bread crumbs. (Panko works well for this) Bake at 350 degrees for 30 minutes. Note: This is also very good with crushed potato chips spread on top to give it a nice crunchy topping.