Peanut Brittle

Directions

1. 1
   In 1 1/2-quart casserole, stir together the first 4 ingredients.
2. 2
   Microwave for 4 minutes on High.
3. 3
   Stir well.
4. 4
   (*If using dry roasted peanuts wait until now to add them.)
5. 5
   Microwave 4 more minutes on High.
6. 6
   Add margarine and vanilla.
7. 7
   Cook 1 minute more on High.
8. 8
   Add baking soda, quickly stir until light and foamy. Immediately pour onto lightly buttered baking sheet.
9. 9
   Spread thin. When cool, break into pieces.