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Microwave Walnut Brittle

Looking for a snappy standout? This brittle is simple to make in the microwave. Plus, it'll bring on the compliments quickly.
  • Total Time
    Prep/Total Time: 25 min.
  • Makes
    1-1/4 pounds


  • 2 cups chopped walnuts or black walnuts
  • 1 cup sugar
  • 1/2 cup light corn syrup
  • 1/2 teaspoon salt
  • 1 tablespoon butter
  • 1 teaspoon vanilla extract
  • 1 teaspoon baking soda


  • In a covered 1-1/2-qt. microwave-safe glass dish, microwave the walnuts, sugar, corn syrup and salt on high for 2-1/2 minutes. Stir; cook 2-1/2 minutes longer. Stir in butter and vanilla. Cover and microwave on high for 1-1/4 minutes. Add baking soda; stir quickly until lightly foamy. Immediately pour onto a lightly buttered baking sheet; spread until very thin. When cool, break into small pieces. Store in an airtight container at room temperature.
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  • di-nann
    Dec 22, 2015

    I have never made brittle before, traditional or microwave, but this turned out perfectly for me. The brittle hardened just fine - a little quickly so you do have to work fast to spread it thin. It is very good and very easy. The girls at work asked for the recipe.I used the recipe out of the magazine from many years ago - and the magazine differs slightly. The first two times in the microwave are 4 minutes and the last time is 2. That might make the difference.

  • jdurkw
    Dec 21, 2014

    Be careful with any brittle receipe that does not have you reach a tempature of 295-300 degrees. Mine did not harden either and I have an 1100 watt microwave Easy does not mean you.can ignore basic rules of cooking.

  • Renea52
    Dec 21, 2008

    It sounds like you didn't cook long enough. Microwave ovens vary. Try cooking 5 minutes before stirring and then 2-1/2 minutes longer.

  • btcallaghan
    Nov 26, 2008

    My brittle never hardened. Therefore, could not use. What did I do wrong. Not happy.