Microwave Peanut Brittle - The Southern Lady Cooks

Microwave peanut brittle is so easy and delicious and my family loves it!  This is the only way to go. Make it in the microwave!  Turns out great every time and is so good. Makes a great Christmas gift, too. This recipe is adapted from a Sharp Carousel Microwave Cookbook that came with my very first microwave many years ago. We have been enjoying this peanut brittle for many years and it’s always a hit. You could easily use pecans or cashews to switch things up!

Microwave peanut brittle ingredients needed:

White sugar

Light corn syrup

Dash of salt

Shelled raw peanuts (Could use regular peanuts or pecans, too)


Baking soda


You want to use a glass casserole dish not Tupperware and be very careful getting it out of the microwave. It will be very hot. Every microwave is different, so you will need to play with the recipe to learn exactly what works for you. There is a video in the recipe card of how it’s made. 

This peanut brittle is one of our most popular holiday recipes. It’s wonderful to give to friends and family as a food gift. It has great reviews too:

“I have used this recipe numerous times as well, and has always turned out wonderfully. I also like to make a spicy peanut brittle, the recipe is the same up until the vanilla. Instead of 1tsp., you add 1/2 tsp. vanilla, 1/2tsp rum flavoring, 1/2 tsp. cinnamon, and 1/2 tsp cayenne pepper. It is so good, the cayenne gives it a little kick, I have had more people want this spicy brittle than the regular.” – Stephanie

“I live in Hawaii and I made a dozen batches for Christmas last year, everyone loved it” – Letha

“I microwave mine 4 minutes, stir, cook 4 minutes; add vanilla and butter, stir. Cook 2 minutess and then stir in baking soda. I also omit the salt. Have been making microwave peanut brittle over 30 years!” – Les

“Success! My microwave only takes 5 mins to cook this! Sweet.” – Sybill

“The microwave cooking time depends very much on the wattage of the microwave oven! My oven is rated at 1000 watts and the two cooking times for the two segments are 4:30 and 2:15.” -Charles

Again.. as you can see each microwave is different, you will need to play with the time to get the correct consistency. Read more comments below the recipe to see what worked for other people.

If you like this recipe, you will love my Easy Christmas Divinity, it’s made in the microwave too!

Microwave Peanut Brittle - The Southern Lady Cooks
Microwave Peanut Brittle - The Southern Lady Cooks
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Print Recipe
5 from 41 votes

Microwave Peanut Brittle

This recipe for Microwave Peanut Brittle is delicious! 
Prep Time5 minutes
Cook Time10 minutes
Total Time15 minutes
Course: candy
Cuisine: American, southern
Keyword: easy recipe, microwave peanut brittle, peanut brittle
Servings: 1 pound
Author: The Southern Lady Cooks


  • 1 cup white sugar
  • 1/2 cup light corn syrup
  • Dash of salt
  • 1 to 1 1/2 cups shelled raw peanuts Could use regular peanuts or pecans, too
  • 1 tablespoon butter or margarine
  • 1 1/2 teaspoons baking soda
  • 1 teaspoon vanilla


  • Spray a baking sheet generously. Combine sugar, corn syrup and salt in a 3 quart microwave bowl. Stir in peanuts and microwave on high until light brown. (About 9 to 10 minutes.) Microwaves vary so you will have to watch the timing.
  • Stir twice while cooking.(This gets very hot, so be careful not to get burned and I use a glass casserole dish. Don’t use tupperware. It will melt.) Stir in remaining ingredients. Mixture should be light and foamy. Quickly spread as thin as possible on greased baking sheet. Let cool and break into pieces. Makes about 1 pound of peanut brittle


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