Nut Brittle
In case anyone needs a more specific temperature, my recipe says cook until thermometer reads 293 degrees.
I talked my MIL to come out to the house for supper during the holidays, and afterwards making peanut brittle on the pretense that she was showing me how to make it :) Two things seem important enough to her for the process that she brought along her own, a heavy pan, and a thermometer. And one does boil that syrup hard for a long time before it reaches that temp. An indication that it is getting close is that the peanuts start to make a popping sound.
I found this recipe but have not tried it:
Peanut Brittle in the microwave
1 cup raw peanuts
1 teas butter
1 cup sugar
1 teas vanilla
1/2 cup white corn syrup
1 teas baking soda
1/8 teas salt
In a 1 1/2 qt casserole, stir together peanuts,* sugar, syrup and salt. Cook 8 minutes on high in microwave oven stirring well after 4 minutes. Stir in butter and vanilla. Microwave 2 minutes longer on high. Add baking soda and quickly stir until light and foamy. Immediately pour onto lightly greased baking sheet, buttered foil, or marble; spread out very thin. Makes one pound.
*roasted peanuts may be used instead of raw, but they must be added right before the baking soda.
Cindy W in Ky