1. Mix peanuts, sugar, syrup and salt in a 1 1/2 quart baking dish. Cook 8 minutes on high, stirring after 4 minutes of cooking time.
2. When done, add butter and vanilla, stirring well. Cook 2 minutes longer and remove from oven. Add soda and stir.
3. Pour on greased cookie sheet.
4. When cool, break into pieces.
5. *If using salted peanuts, omit salt.
