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Easy Microwave Peanut Brittle

Where are all my brittle fans? This week I’m sharing a new recipe for the easiest brittle you’ll ever make… introducing: Easy Microwave Peanut Brittle!

easy microwave peanut brittle on a platter

I absolutely love peanuts — they’re my favorite over almonds, cashews, and other nuts, so I was excited to give this recipe a try.

ingredients displayed for making microwave peanut brittle

Ingredients needed:

  • salted peanuts
  • baking soda
  • granulated white sugar
  • vanilla extract
  • light corn syrup
  • salted butter

recipeboy making peanut brittle

How to make Microwave Peanut Brittle:

The complete, printable recipe is at the end of this post.

Begin by lining a rimmed baking sheet with parchment paper and then set it aside. Pour the granulated white sugar and light corn syrup into a large microwave-safe bowl (I recommend glass) and combine. Next, toss the bowl into the microwave for 4 to 5 minutes. You want to see consistent bubbling in the bowl. Remove the bowl, stir, then add the peanuts and microwave for another 4 to 5 minutes. This is where the brittle will turn light brown. You don’t want it to burn, so watch it closely! (continued below)

four photos showing how to make microwave peanut brittle

You’ll want to stir in the butter and vanilla extract carefully — the mixture will be hot! Microwave for another 2 minutes, then add the baking soda. At this point, the mixture may foam or bubble up. 

spreading peanut brittle onto a baking sheet

Finally, pour the mixture (quickly) onto your prepared baking sheet and set aside to cool for at least 30 minutes. Try to spread it out as evenly and thinly as you can. 

breaking apart peanut brittle

Now… The fun part! Take the brittle and use your hands to break it apart. If it’s a little thick, you can tap it gently on the edge of the baking sheet to break it up. Be careful — shards of brittle will fly!

This is a delicious, ridiculously-easy treat to prepare during the holiday season. Easy Microwave Peanut Brittle requires only 20 minutes of hands-on time between preparation and cooking, so there’s plenty of time left over for the rest of your Christmas festivities. If you’re a fan of peanuts, I highly recommend giving this recipe a try… It’s tasty!

recipeboy holding tray of peanut brittle

Favorite Candy Recipes:

easy microwave peanut brittle on a platter

Microwave Peanut Brittle
Super easy candy recipe!
Prep Time 10 minutes
Cook Time 10 minutes
Cooling Time: 30 minutes
Total Time 50 minutes
Course Dessert
Cuisine American
Servings 8 servings
Calories 289 kcal



  • Line a rimmed baking sheet with parchment paper. Set it aside.
  • In a large, glass microwave-safe bowl, combine the sugar and corn syrup. Microwave on high for 4 to 5 minutes- until there is consistent bubbling.
  • Stir in the peanuts. Microwave on high for 4 to 5 minutes- just until the mixture turns light brown (not burnt-- watch closely!)
  • Carefully stir in the butter and the vanilla. Microwave on high for 2 minutes.
  • Stir in the baking soda. The mixture may foam and bubble-up. Carefully and quickly pour the mixture onto the prepared baking sheet, spreading it out evenly. Place it on a rack to cool for at least 30 minutes.
  • Use your hands to break up the peanut brittle. Store it in an airtight container at room temperature for up to 2 weeks.


  • The recipe makes about 4 cups in all.


Serving: 1servingCalories: 289kcalCarbohydrates: 45gProtein: 5gFat: 12gSaturated Fat: 3gPolyunsaturated Fat: 3gMonounsaturated Fat: 5gTrans Fat: 0.1gCholesterol: 8mgSodium: 252mgPotassium: 144mgFiber: 2gSugar: 41gVitamin A: 87IUCalcium: 22mgIron: 0.4mg
Keyword microwave, peanut brittle
Tried this recipe?Let us know how it was!
Recipe Rating


Monday 11th of March 2024

What size cookie sheet for correct thickness? Mine is xl: 21”x15” and I’m worried the result would be too thin.


Friday 29th of March 2024

You can use any size baking sheet... just spread it out thinly.