Easy-to-Make Microwave Peanut Brittle Recipe

by Ishani Bose last updated -

With a nutty and crispy caramel-like flavor, peanut brittle has to be one of the best easy-to-make desserts to share with your family during the holiday season or a great homemade gift idea for your friend and neighbor. While it’s a simple preparation that doesn’t take more than 20 minutes, the entire process becomes furthermore undemanding and effortless, when you use a microwave. If you haven’t tried making the microwave peanut brittle already, we have the perfect recipe for you!

Microwave Peanut Brittle Recipe

To make microwave peanut brittle, you will need to gather all the ingredients in a glass casserole or mixing bowl and allow it to cook in a microwave. Make sure that you stir the ingredients well before putting it in the microwave. If you want your peanut brittle to have a meltaway effect, ensure that you spread as little as possible in the sheet so that your final product is light and crisp. Here, have a look at the detailed recipe for a better understanding.

Peanut brittle pieces on a parchment paper placed on a wooden board

Microwave Peanut Brittle Recipe

A delicious, sweet-and-salty flavored, crispy dessert for you and your family this holiday season!
5 from 1 vote
Print Pin Rate
Course: Dessert
Cuisine: American
Keyword: microwave peanut brittle
Appliance: Microwave
Prep Time: 5 minutes
Cook Time: 10 minutes
Total Time: 15 minutes
Servings: 8 servings
Author: Ishani Bose


  • 1 cup granulated sugar
  • 1 and 1/4 cup salted roasted peanuts
  • 2 tbsp corn syrup
  • 1 and 1/2 tsp vanilla
  • 1 and 1/2 tsp butter
  • 1 tsp baking soda


  • To make microwave peanut brittle, add corn syrup and granulated sugar in a glass casserole or mixing bowl and stir properly. Thereafter, microwave it for 3.5-4 minutes. To this add, the roasted salted peanuts and stir them well before microwaving the mixture for 3 additional minutes. Once you see them turning light brown stop the procedure. 
  • To the mixture, add vanilla and butter and stir vigorously till it's properly mixed. Thereafter, microwave it for 1.5 minutes. 
  • In the meantime, keep the buttered cookie sheet ready. Once the mixture is ready, don't waste much time and add baking soda to the mixture and stir well till it turns light and foamy. Once done, promptly pour and spread the mixture over the greased cookie sheet. 
  • Gently spread the mixture over the pan by rotating it rather than using a spoon to do so. Continue to do so till the mixture is properly spread. Ideally, it should be at least 1/2 an inch thick. Make sure you do this quickly as the mixture, at this point in time, will start to harden. 
  • Allow the peanut brittle to cool for 30 minutes. Once it cools down and turns hard and is smooth to feel, break the candied spread into small pieces. Store it in an air-tight container. Your microwave peanut brittle is now ready!
    peanut butter brittle on a baking sheet

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About the Author

An alumnus of St. Xavier’s College, Mumbai, Ishani Bose has worked as a reporter/features writer for several leading newspapers and organizations in India. It was her love for food, health, and wellness that brought her to Organic Facts. She is also passionate about mental health and enjoys writing about it to educate more and more people about the same. She is an avid Instagrammer who knows the latest social media trends. When not writing or cooking, you’ll find her reading, traveling, soaking herself in music, arts, and culture in every way possible. Ishani has completed an online program on “Introduction to Food and Health” by Stanford University, US. Furthermore, she has completed an online course on “The Science of Wellbeing” by the Department of Psychology, Yale University.

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