Boil and drain pasta - you want it al dente (still a little firm)

In a medium sauce pan, melt the butter

Once the butter is melted, whisk in the flour until well mixed (will be a paste like consistency)

Cook for about a minute (whisking the entire time)

Slowly pour in the milk; whisk until flour mixture is well incorporated into the milk

Continue to stir until the mixture thickens (this takes a little while 5-10 min)

Once thickened add the cheese and stir until melted

Mix with your pasta

Pour into a casserole dish

Top with extra cheese

Bake at 350 degrees for about 20-30 min or until bubbly

Serve right from the oven and watch it disappear like magic!