Mix well the first three ingredients in a large glass bowl. Microwave for 4 minutes on high**. Stir well. Microwave for another 4 minutes on high**.

To the above mixture, add the butter, vanilla extract, and salt. Microwave two more minutes.

Add the baking soda and stir rapidly. Pour quickly into a 9" x 13" buttered pan. When cool, remove and break into pieces. Note: the temperature at which to set your microwave varies according to its maximum power. If your microwave is 700 watts, as mine is, I suggest that you use a slightly lower setting, such as medium high, or you may have trouble with the mixture burning.

/Candy