Microwave Peanut Brittle Recipe (2024)

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Microwave peanut brittle recipe is an easy sweet, salty and buttery peanut brittle that takes minutes to make. No- fuss, full proof method that requires no stove top candy thermometer!

Microwave Peanut Brittle Recipe (1)

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Peanut Brittle Recipe

Holiday recipes can mean anything from sweet corn casserole to fresh green beans, marshmallow fluff to deliciously sweet cookie dip.

But one thing that reminds me so much of a vintage holiday is peanut brittle.

Probably because the last time I could seriously enjoy it without worrying about a filling falling out was in my child hood (or maybe because of that) but nonetheless, peanut brittle is a delightful and enjoyable no bake Christmas dessert that also easily doubles a gift.

But with this peanut brittle, you need nothing more than a microwave, ingredients and a little care to not over cook or under stir. Sweet and salty, this simple dessert is nothing more than sugar, syrup and peanuts!

Can the best peanut butter brittle recipe GET any easier? I think not!

Microwave Peanut Brittle Recipe

Have you ever wanted to learn how to make peanut butter brittlein the microwave?

Skip the stove top and opt for this easy microwave version that creates your own homemade candy in minutes. With only about 15 minutes prep time, its also a dessert that is quick with simple steps.

Just please read my notes below about working with sugar and microwave times.

  • 1 cup white sugar
  • 1/2 cup light corn syrupMicrowave Peanut Brittle Recipe (2)
  • 1 cup raw peanuts (I used dry roasted, lightly salted peanuts)
  • 1 teaspoon butter
  • 1 teaspoon vanilla
  • 1 teaspoon baking soda

Microwave Peanut Brittle Recipe (3)

Making Peanut Brittle Tips

  1. Making peanut brittle is a candy process and that means big heat. Even though this is a microwave oven, your sugar and corn syrup are gonna get scalding, so take serious care not burn yourself on the bowl or while stirring. Get some oven mittsMicrowave Peanut Brittle Recipe (4)~
  2. Prepping goes a long way (with pretty much all cooking) so to keep your candy from pre-maturely hardening, make sure you have everything measured and ready to go.
  3. Want to gift your microwave peanut brittle? Once complete hard and broken down into smaller bits, I like to gift in mason jarsMicrowave Peanut Brittle Recipe (5)!
  4. Like with all candy making, if you have an issue cleaning out your bowl from hardened candy, just let sit in a bowl of water. The water will break the sugar down, takes about 30 minutes.
  5. Seal in a tight container to keep moisture from getting in and leave in a room temperature environment. Do not refrigerate! If you need to do a double layer, put parchment paperMicrowave Peanut Brittle Recipe (6) in between or the top layer could easily stick to the bottom. It is candy after all.

Scalding Sugar

When working with sugar, even in the microwave, its easy to BURN it.

You will know you burned it if you start smelling burnt! The times in this microwave peanut brittle are based on my microwave, but you may need to shave 30 seconds off if you have a very powerful microwave.

In the pictures below, I made peanut brittle at the full times listed AND redid it with a minute shaved off of the 1st and 2nd microwave times.

You can see the color difference with less time. It also tastes less roasted, but the consistency is the same.

How to make Peanut Brittle In the Microwave

Line a baking sheet with parchment paper and spray with nonstick cooking sprayMicrowave Peanut Brittle Recipe (7). Set aside.

Add white sugar and corn syrup into a large microwave safe bowl. Glass gets super hot.

Microwave for 3 1/2 to 4 minutes.

You want a large bowl because as you microwave, the mixture will double in size and bubble.

Mix well and quickly after you pull it out. Move to next step.

Microwave Peanut Brittle Recipe (8)

Microwave Peanut Brittle Recipe (9)

Add peanuts and return to microwave for 2 1/2 to 3 minutes.

Mixture will bubble and double in size again and begin to brown in color.

Stir well and very quickly before next step.

Microwave Peanut Brittle Recipe (10)

Add butter and vanilla and cook for 1 minute more.

Your butter may steam up as it hits the scalding sugar.

Mix well for a few seconds

Add baking soda and mix.

Microwave Peanut Brittle Recipe (11)

Mixture will change color (cloudy) and bubble with air bubbles, this is fine and normal.

Use a spatula to quickly pour into prepared baking sheet.

NOTE ON SPREADING THE BRITTLE:

You don’t want to pop all the bubbles out of the baking soda, so do your best to rotate the baking sheet back and forth to spread your peanut brittle. You can use a spatula to spread a little if necessarily, but don’t go overboard.

It doesn’t spread like chocolate would.

Microwave Peanut Brittle Recipe (12)

Microwave Peanut Brittle Recipe (13)

Let set to harden.

I put in the freezer 15 minutes to harden immediately because I have almost no patience, but you can sit on the counter for an hour and it should harden naturally.

Once hard, use a sharp knife or break with your hands into pieces.

Store in an airtight container on the counter.

Microwave Peanut Brittle Recipe (14)

Microwave Peanut Brittle Recipe (15)

Microwave Peanut Brittle Recipe (16)

4.74 from 15 votes

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Microwave Peanut Brittle Recipe

Author Trisha Haas - Salty Side Dish


Cook Time 5 minutes mins

Total Time 5 minutes mins

Microwave Peanut Butter brittle recipe is an easy sweet, salty and buttery peanut brittle that takes minutes to make in a microwave oven. No- fuss, full proof method that requires no stove top candy thermometer! Vintage Christmas dessert

Ingredients

  • 1 cup white sugar
  • 1/2 cup light corn syrup
  • 1 cup peanuts I used dry roasted, lightly salted peanuts
  • 1 teaspoon butter
  • 1 teaspoon vanilla
  • 1 teaspoon baking soda

Instructions

  • Line a baking sheet with parchment paper and spray with nonstick cooking spray. Set aside.

  • Add white sugar and corn syrup into a large microwave safe bowl.

  • Microwave for 31/2- 4 minutes (see note on times). You want a large bowl because as you microwave, the mixture will grow in size and bubble.

  • Mix well (and quickly) when cooking is complete.

  • Add peanuts and return to microwave for 2-3 minutes.

  • Mixture will bubble and double in size again and begin to brown in color.

  • Stir well and quickly after cooking. Your sugar starts to harden at each step so move quickly.

  • Add butter and vanilla and cook for 1 minute more. Mix well. quickly.

  • Add baking soda and mix. Mixture will change color and look cloudy. This is normal.

  • Quickly pour into prepared pan and gently spread, but not too thin. It wont spread like chocolate so do not panic. If it seems too thick in some places, you can spread a bit with a spatula.

  • Let set to harden. I put mine in the freezer for 15 minutes to harden quickly but the normal way is 1 hour on the counter naturally cooling.

  • Once hard, break into bite size pieces.

  • Store in an airtight container on the counter. The fridge may soften the sugar so its best left on the counter.

Video

Notes

Scalding sugar

When working with sugar, even in the microwave, its easy to BURN it. The times in this microwave peanut brittle are based on my microwave, but you may need to shave 30 seconds off if you have a very powerful microwave. In the pictures below, I made peanut brittle at the full times listed AND redid it with a minute shaved off of the 1st and 2nd microwave times.

You can see the color difference. It also tastes less roasted, but the consistency is the same.

See full article for video and tips.

Nutrition

Serving: 1 | Calories: 271kcal | Carbohydrates: 45g | Protein: 4g | Fat: 10g | Saturated Fat: 2g | Polyunsaturated Fat: 7g | Cholesterol: 1mg | Sodium: 250mg | Fiber: 2g | Sugar: 42g

Nutritional Disclaimer: The nutritional data provided here is auto-calculated and intended for your convenience only. As it’s generated via automation, its accuracy may be compromised. For precise nutritional insight, please compute the values utilizing the actual ingredients in your recipe through your chosen nutrition calculator or application.

Sharing of this recipe is encouraged and appreciated. Copying of full recipe to any social media is prohibited.

Did You Make This Recipe?

Make sure to follow Salty Side Dish on Pinterest and rate the recipe here and make sure to leave a comment below!

4.74 from 15 votes

Microwave Peanut Brittle Recipe (2024)

FAQs

Why didn't my homemade peanut brittle get hard? ›

The main reason why peanut brittle doesn't get hard and have the crunch we expect is because the sugar was not cooked long enough. The sugar needs to be cooked to what is called the hard crack stage, 300ºF.

How can you tell when peanut brittle is done without a thermometer? ›

If you do NOT have a thermometer, here's what you do. Take a very small cup of cold water and drop a bit of the mixture in. If it dissolves into the water, it's not ready. Mine took 18 minutes to reach the correct temperature, so around 15 minutes start trying the water test.

What happens when you add baking soda to peanut brittle? ›

Baking soda is also very important at this stage since it reacts to the heat, creating carbon dioxide that aerates the caramel, enabling it to snap when someone bites into it rather than requiring them to gnaw at it until it breaks or pulls apart.

Can you overcook peanut brittle? ›

If you overcook the brittle, it could be bitter or burnt. If you undercook it, the brittle won't properly set and the end result will be sticky. A thermometer is an accessible and inexpensive way to monitor temperature and ensure properly cooked brittle. Make sure your baking soda is fresh and active.

How do you make peanut brittle hard again? ›

- Preheat your oven to a low temperature, around 250°F (120°C). - Break the stale peanut brittle into smaller pieces. - Place the brittle pieces on a baking sheet in a single layer. - Heat the brittle in the oven for about 5 to 10 minutes, checking frequently to avoid overcooking.

What makes brittle hard? ›

What Makes it Brittle? The sugar will be cooked to 300ºF (149ºC)—hard crack stage; which when set up would be hard like a lollipop. But peanut brittle is delicate and you can easily bite into it—how? The secret is in the baking soda.

Why is my peanut brittle like taffy? ›

Didn't get it hot enough. You have to hit hard crack stage heat or it's not going to harden. From internet: Hard-Crack Stage is a cooking term meaning that a sugar syrup being heated has reached 149 – 154 C (300 – 310 F.) It is a test of how hot a sugar syrup is, and of how much water is left in it.

How long does it take for peanut brittle to go bad? ›

To store: Once it's completely cooled, store peanut brittle in an airtight container at room temperature. Do not refrigerate as the moisture from the fridge will cause the brittle to soften. Store for 6-8 weeks. To Freeze: Peanut brittle can be frozen and stored up to 3 months.

Can peanut brittle spoil? ›

Store peanut brittle in an airtight container (for best results use wax or parchment paper to divide pieces as they may stick together) in a dry place, but not in the refrigerator. Peanut Brittle will keep up to 2 months.

Why didn't my peanut brittle set? ›

Why didn't my homemade peanut brittle get hard? Same answer as the question above. If your peanut brittle is not hardening, it's because the sugar mixture did not get hot enough to properly caramelize, cool and become hard, crisp and crunchy.

Why is my peanut brittle not airy? ›

Working quickly, pour into prepared 10×15 pan. To keep the brittle light and airy, do not spread or flatten the mixture. Instead, let it flow freely. Place in a cool area and leave until completely cooled, about 2-3 hours.

Why is my peanut brittle hard but sticky? ›

What's important to know is that the corn syrup controls the grain of the brittle so adding too little and you have a grainy textured brittle, while adding too much will result in a stringy and sticky brittle.

How do you keep peanut brittle crispy? ›

The candy will attract moisture from the air, making it unpleasantly sticky instead of shatteringly crisp. Once it's completely cool, transfer it to an airtight container.

Why is my peanut brittle bitter? ›

I don't recommend substituting honey, molasses, or agave for the corn syrup. Those other liquid sugars have impurities that will burn at the higher temperature of making caramel, leading to a bitter-tasting brittle.

Why do you put water in peanut brittle? ›

The water is there in the first place to help prevent sugar crystals. Steam from the boiling water washes down the sides of the covered pot as the sugar cooks and takes with it, down into the boiling sugar, any crystals that form or are thrown onto the sides of the pot.

Why is my peanut brittle not crunchy? ›

This is because you did not cook it long enough in the microwave. If the texture of the peanut brittle is sticky, and not crunchy, this means that you need to cook the mixture longer, until it reaches 300°F.

Why is my peanut brittle gooey? ›

As we said, the biggest enemy to the longevity of your peanut brittle is moisture. Whether it's during the cooking, cooling, or storage process, moisture and humidity can ruin the best batch of brittle in minutes, leaving you with a soggy, sticky mess.

Why are my peanuts not getting soft? ›

Dried peanuts may require boiling up to 24 hours until they soften. If your water is hard, full of minerals, or you are boiling at high altitude, then your boiling times for dried peanuts may be greater than 24 hours.

How long does it take for brittle to harden? ›

Don't try to spread the candy once it's on the baking sheet as it starts hardening almost immediately and spreading it doesn't work well. Let the peanut brittle cool for 30 minutes, then break it into pieces. Store it in an airtight container at room temperature for up to two months.

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