Microwave Peanut Brittle Recipe

4.54 from 15 votes

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No candy thermometer is required for this no hassle microwave peanut brittle candy recipe. And it takes only 10 minutes of hands-on time. It can’t get easier than this!

{scroll down for video tutorial}

No candy thermometer is required for this no hassle microwave peanut brittle candy recipe. And it takes only 10 minutes of hands-on time. It can't get easier than this!

My mother-in-law’s friend, Leo, makes the most addicting peanut brittles that I’ve ever had! It’s sweet and nutty, melt-in-your-mouth crunchy. I don’t know if that last part make any sense at all, but it basically means it’s not rock hard, or stick-to-your-teeth chewy that you’d pray not to lose a teeth while eating it.

No, nothing like that. Instead this peanut brittle has light and airy texture with the most satisfying crunch.

Every Christmas my MIL shares her bag of treats from Leo with me, because she knows how much I love them. Well, this past January she brought yet another bag full of amazing brittles for me and my mom.

My mom loved those brittles so much so she insisted me to call Leo for the recipe, and I obliged. Don’t know why it took me so long, but I’m so glad I did.

And today I’m going to show you how to make the easiest and most addicting candy ever. Ready?

No candy thermometer is required for this no hassle microwave peanut brittle candy recipe. And it takes only 10 minutes of hands-on time. It can't get easier than this!

As I said earlier,  these are the easiest peanut brittles in the world! No exaggeration here, because 1. You don’t need candy thermometer. 2. No stirring sugar mixture over hot stovetop for a long time. 3. It only takes 10 minutes of hands on time, one bowl with a lid, a microwave, and handful of simple ingredients.

Here’re my tips and tricks for success:
  • Prepare and measure out all the ingredients before starting. The process goes super quick and you want that margarin, that baking soda right now!
  • Speaking of margarin. Yes, you do need margarin. And no, you can’t use butter, I tried it to no avail. (<- I got rock hard brittles!) I gave in and bought a package of margarin just for this recipe, but it’s so worth it.
  • Microwave-safe bowl with a lid is essential. Leo stressed that the bowl has to have a lid, or you’ll risk burning the mixture.
  • Baking soda is what makes the candy so airy and light. After mixing in soda, the mixture will foam up. Don’t be alarmed, because it’s a good thing. Don’t take too much time mixing though, just a few good stirs until the mixture is evenly foamed up and pour it on a buttered baking sheet. I use 2 forks to spread it out evenly, but not too thin.
  • Directions on timing in this recipe are for 1000Watt microwave.

I now know the recipe by heart, as I’ve made countless batches to feed my mom’s craving. I even sent some to my sisters back in Mongolia, and they all loved it. Well, I mean, what’s not to love here??

No candy thermometer is required for this no hassle microwave peanut brittle candy recipe. And it takes only 10 minutes of hands-on time. It can't get easier than this!

Hope you give this fool-proof recipe a try.

4.54 from 15 votes

The Easiest Peanut Brittle

No candy thermometer is required for this no hassle microwave peanut brittle candy recipe. It takes only 10 minutes of hands-on time. It can’t get easier than this!
Prep: 20 minutes
Cook: 10 minutes
30 minutes
Total: 1 hour
Servings: 1 pound


  • 1 cup (125 g) dry-roasted peanuts
  • 1 cup (200 g) granulated sugar
  • 1/8 teaspoon salt
  • ½ cup (150 g) light corn syrup
  • 1 tablespoon (14 g) margarine, or unsalted butter
  • 1 teaspoon pure vanilla extract
  • 1 teaspoon baking soda


  • Before you begin, check your microwave power. (Mine was written at front when you open the door.) The time directions in this recipe for microwaves with 1000Watts.
    Measure and prepare all the ingredients before moving forward.
  • Prepare a baking sheet and spray with non-stick spray.
  • In 1-quart microwave-safe bowl with a lid (stay away from plastic container though, I prefer a glass bowl), combine peanuts, sugar, salt and corn syrup.
  • Cover the bowl and microwave the mixture for 3 minutes. (TIP: If you don’t cover the mixture, it’ll get burnt.) Take it out and give it a nice stir.
  • Then cover and microwave for another 3.5 minutes. Take it out and stir in margarine and vanilla extract.
  • Cover and microwave again for 2.5 minutes. Take it out and add baking soda.
  • Quickly stir, as the mixture foams. And pour the mixture onto the prepared baking sheet.
  • Using 2 forks, spread it out into even layer.
  • Let it cool and harden, about 30-45 minutes. Store in a ziplock bag for up to a week.

Tips & Notes

For video directions and additional notes, read the post above.


Calories: 2246kcal, Carbohydrates: 364g, Protein: 36g, Fat: 86g, Saturated Fat: 13g, Polyunsaturated Fat: 26g, Monounsaturated Fat: 42g, Sodium: 2644mg, Potassium: 1005mg, Fiber: 12g, Sugar: 337g, Vitamin A: 501IU, Vitamin C: 1mg, Calcium: 110mg, Iron: 3mg
Course: Snack
Cuisine: American

Hi, I’m Shinee!

Welcome! I’m so happy you’re here! I believe anyone can cook restaurant-quality food at home! And my goal is to help you to become a confident cook with my easy-to-follow recipes with lots of tips and step-by-step photos.

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  1. 5 stars
    I tried to make this recipe and it came out to soft.
    What Can I do to make it turn out a little hard but not to hard. 
    Thank you, Anna Baty

    1. Hi, Anna. Have you checked the power of your microwave. I’m guessing it’s less than 1000Watt? If it is, then you many need to increase the cooking time. My instructions are for 1000Watt microwaves.

    1. Hi, Teresa! The person I got the recipe from actually called for Spanish peanuts, but I couldn’t find it in our grocery store, so I use dry roasted salted peanuts. And I love it. So you can definitely try Spanish peanuts.

    1. Did you cover the bowl? Uncle Leo, who I got this recipe from, had warned that if you don’t cover, it burns. I always cover mine, and never had mine burnt. I made so many batches this year.

  2. when making this try adding nuts the last minutes or at the end this works  add crushed nuts this way they won’t burn like so many said there’s burnt

  3. I made this it so EZ and great taste the only thing I did was crush the peanuts it spread out easier a was like air great

    1. Oh, I’ll have to try crushing the nuts. I can imagine how it’s much easier to spread that way. Thanks for the suggestion, I’ll definitely try that next time I make this.

  4. Done this twice and each time my peanuts come out burn at the end, and when my Granddaughter did it it was great, can’t figure what I’m doing wrong, pls help. Lol

    1. Hi, Paro. What’s the power of your microwave? The time directions are for microwaves with 1000watt power. If your microwave is more powerful, it’ll burn the mixture. You’ll have to adjust the power when you’re microwaving, or adjust the time, but I won’t be able to offer any specifics as to how much. Hope this helps.

    1. So, yes! AND it failed miserably! 🙂 I doubled the batch (I needed like 4 batches) and increased the cooking time, but it still didn’t set right. It turned out kind of soft and chewy, and not in a pleasant way. I’d stick with the recipe as is. But I know how tempting it is to make one big batch. 😉

    1. Deb, you’ll need to increase the time for each round, since your microwave has lower power. If I have to guess, maybe add a minute to each round. Otherwise, the mixture won’t reach high enough temp to set properly.

  5. This sounds so good. I love peanut brittle but have failed to make it right. It is too expensive to buy already made so I have to try this one. So happy to have found you and this recipe!

  6. I made this peanut brittle and it’s AMAZING!! I didn’t think it would work because it just seemed too easy but it did and it was delicious and hubby and I devoured it. Now I want to make another batch but I’m thinking I should wait…..or NOT. Thank you for sharing and I love the fact that there’s no candy thermometer. Follow the recipe exactly and the magic will happen!!

    1. Janet, so happy you tried! Isn’t it amazing how easy it is? I’ve made many peanut brittles complicated way, but they turned out quite as well as this one. Thanks so much for your feedback! 🙂