sCUT butter into 2 pieces and put in a microwave-safe bowl; MELT, uncovered, on High setting, about one minute.
STIR in flour and salt until smooth; MICROWAVE, uncovered, on HIGH 30 seconds.
STIR in milk and COOK on High 3 or 4 minutes, STIRRING after each minute.
STIR in tabasco and nutmeg, if using.
SERVE immediately over cooked green beans or other vegetables.
Per Serving (excluding unknown items): 68 Calories; 5g Fat (68.0% calories from fat); 2g Protein; 4g Carbohydrate; trace Dietary Fiber; 16mg Cholesterol; 237mg Sodium. Exchanges: 0 Grain(Starch); 0 Non-Fat Milk; 1 Fat.