Microwave the cheese and milk (plus the dry mustard, Tabasco or onion powder, if using) in a microwave safe dish on high.
Stir well at 30 second intervals, until cheese is melted and mixture is smooth and creamy (about 2 to 3 minutes total--you may need to add more milk, as desired).
Serve hot over cooked cauliflower or broccoli (or your favorite vegetable). Enjoy!
