**If you don't like cinnamon, just leave it out. The recipe works well with or without it.
1 Cup sugar
1/2 Cup light corn syrup *clear in colour, the amber will work, but the brittle will be darker in colour
2 Cups salted peanuts
1 Tsp. butter *no substitutes, it won't work
1/2 Tsp. ground cunnamon *or not
1 Tsp. baking soda
1 Tsp. vanilla extract
In a 2 Qt microwave-safe bowl, combine sugar and corn syrup. Heat, uncovered on high for 4 minutes; stir. Heat 3 minutes longer. (it should be bubbly) Stir in peanuts, butter and cinnamon. Microwave uncovered, on high for 30-60 seconds OR until mixture turns a light amber colour (mixture will be very hot) (and will bubble up the bowl). Quickly stir in baking soda and vanilla until light and foamy, immediately pour onto a greased baking sheet and spread out with a metal spatula (also greased). Refrigerate for 20-30 minutes and break into small pieces. Store in an airtight container.
Yield: 1 1/4 lbs. NOTE: this was tested on an 850 watt microwave.
My note: This works great on the micro at my trailer, but y'day on my home micro it turned out more like peanut taffee. (still good) I think it needed more cooking time in the last part.