1. Put water on to boil for pasta. Preheat oven to 400 degrees F. While water is boiling, put first 7 ingredients (through pepper) in the blender and blend until well blended.
2. Add water and soy sauce and blend more. Heat oil in skillet, and then add flour to make a roux. Stir constantly until you don't have any lumps. Put pasta in boiling water and cook according to package directions.
3. Pour the cheesy sauce you made in the blender into roux and stir until it is warm and at your desired consistency (if it is too watery, let it reduce some). When it gets to that consistency, remove from heat.
4. Drain pasta through colander and pour pasta into the pan of cheesy sauce. Transfer mixture into oven safe dish, and put it into the oven for 10 or so minutes. Enjoy.