How to Make Welsh Rarebit
- Toss cheese with flour in a heavy medium saucepan
- Add beer and mustard
- Heat on very low, stirring often, until cheese is melted and smooth (mixture can be prepared to this point and reheated later)
- Place toasted bread slices on a small greased baking sheet
- Spoon cheese mixture over toast, completely covering the surface. Broil 4 inches from heat until bubbly and lightly browned.
- Broiling for too long will make cheese tough