1. In a covered 1-1/2-qt. microwave-safe glass dish, microwave the walnuts, sugar, corn syrup and salt on high for 4 minutes.
2. Stir; cook 4 minutes longer. Stir in butter and vanilla.
3. Cover and microwave on high for 2 minutes.
4. Add baking soda; stir quickly until lightly foamy.
5. Immediately pour onto a lightly buttered baking sheet; spread until very thin.
6. When cool, break into small pieces. Store in an airtight container at room temperature.

Serves:4
Calories:250