Microwave Nut Brittle Recipe (2024)

By Harold McGee

Microwave Nut Brittle Recipe (1)

Total Time
30 to 40 minutes
Rating
4(110)
Notes
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Ingredients

Yield:About 2 pounds

  • 2cups raw nuts or seeds
  • 2cups sugar
  • 1cup corn syrup
  • ½teaspoon salt
  • 2tablespoons butter
  • 1teaspoon baking soda
  • 1teaspoon vanilla extract

Ingredient Substitution Guide

Nutritional analysis per serving (14 servings)

311 calories; 12 grams fat; 2 grams saturated fat; 0 grams trans fat; 7 grams monounsaturated fat; 2 grams polyunsaturated fat; 52 grams carbohydrates; 2 grams dietary fiber; 47 grams sugars; 3 grams protein; 175 milligrams sodium

Note: The information shown is Edamam’s estimate based on available ingredients and preparation. It should not be considered a substitute for a professional nutritionist’s advice.

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Microwave Nut Brittle Recipe (2)

Preparation

  1. Step

    1

    Chop the nuts or seeds if they are large; otherwise, leave them whole. Put them into a 4-quart glass bowl with all other ingredients except the baking soda and vanilla extract. Stir in ¾ cup water. Heat in a microwave oven on high power for 5 minutes. Using oven mitts or potholders, carefully transfer the bowl to a countertop and stir with a heat-resistant spatula. Repeat 2 or 3 more times, until the syrup thickens and the nuts begin to stick together. Then heat for 1-minute periods, stirring in between, until the syrup begins to turn light golden brown.

  2. Step

    2

    Line a baking sheet with foil. Add the baking soda and vanilla extract to the syrup and stir vigorously. Quickly pour the mixture out onto the baking sheet and use the spatula to spread it as thin as possible. Allow to cool to room temperature, then peel off the foil and break the brittle into pieces. Store in an airtight container.

Ratings

4

out of 5

110

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Private Notes

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Cooking Notes

RES

Warm the baking sheet in the oven while microwaving the mixture and pull it out as close to pouring time as possible. The brittle firms up very quickly and this will buy you a few precious seconds of spreading time.

Allyson Smith

This is a good recipe. After reading a review about sticky brittle that didn’t really get hardened properly, I decided to get a temp on mine before spreading out on the pan. I had an old candy thermometer in my cupboard which I found to be agonizingly slow at giving a reading, then I realized I had a better tool: I found that my Thermapen instant thermometer was useful in determining that 300 degree stage. Next time I make this I would increase the nuts a bit. Maybe by a half a cup.

Modestchef

I was surprised to be using the microwave this way, but the results are first-class. It made me go out and buy McGee's book Keys to Good Cooking, which is filled with knowledge and even wisdom.

Eileen

I’ve been making peanut brittle for years. It’s crucial to monitor the temperature, especially for gift giving. The sweet spot is so narrow, less than 295 the brittle sticks to your teeth, a bit more than 300 it’s almost burnt. Candy making, like baking is an exact science.

Jenny

My batch did not get brittle— obviously didn’t microwave it long enough, but “light golden brown” is subjective. Did 3 5-min intervals plus 4 1-min intervals. Next time I’ll follow a traditional recipe and use a candy thermometer...

Amy C

I tried this but ended up saving it by breaking up the cooled brittle and cooking it on the stove to the desired temp, so for me it didn't work as written. When cool my brittle did in fact break, but it was sticky. Not something I'd feel good giving away. I respect Mr. McGee, but the directions here are thin. Sugar work really requires a candy thermometer which I have learned the hard way. I think if you are an experienced candy maker, you might know when it looked right, but I didn't.

The pelicanist

I can make sugar and nuts into brittle a lot faster with my induction burner and a candy thermometer. Seems curious to use a microwave, but it’s interesting.

Lisa O

This didn't work for me. Brittle snapped but was too chewy which means I didn't get my sugar temp high enough. "Light, golden brown" is too vague. I should have used a thermometer.

Kristin

I agree the instructions are lacking. On the basis of comments here I did it on the stovetop with my candy thermometer. It look awhile to get to 300 and anything beyond that was clear it would burn quickly I used a 12x9 pan and wish I’d used a larger pan.

mzphyz

This brittle recipe is great w/large nuts that can take lengthy heating—e.g., cashews & peanuts. Pecans, otoh, burn before the mix reaches the proper temperature. Most stovetop brittle recipes have one mixing the nuts in at the end, tricky because the syrup cools too quickly. I tried pouring the syrup over nuts spread on a hot baking sheet, messy & uneven results. Best—mixing nuts in when syrup is just a degree or two short of done, zap another minute or so, pour onto heated baking sheet.

Todd B.

The taste was good but it was more like peanut taffy, not crisp at all. I did 4 - 5 minutes cycles and then a 2 minute cycle but still not good enough. I will try a regular stove top recipe next time.

Catalina

This recipe makes perfect brittle, provided you use a thermometer. I followed the directions exactly. Three times in the microwave for 5 minutes each time, then three one-minute sessions, using a "gun" thermometer each time it came out of the microwave until it reached 300 deg. F. (It actually finished at 304 deg after the 3rd one-minute session).From the comments I knew to use a hot sheet pan. I used pumpkin seeds.

KL

Mine was an utter fail, and I’m guessing from others’ comments that I didn’t get the temperature high enough. It was nearly boiling over in the microwave, but I ended up with a bendy, sticky mess that absolutely does not break and will not peel off the foil, either :(

Kristin

I agree the instructions are lacking. On the basis of comments here I did it on the stovetop with my candy thermometer. It look awhile to get to 300 and anything beyond that was clear it would burn quickly I used a 12x9 pan and wish I’d used a larger pan.

Erica

Made a half batch so that may be why after first round, temp was 167 and in the midst of round 2, I smelled burnt sugar. Pulled it out, bubbling furiously and 395 was on the insta read. I didn’t want to waste it so added the extract and baking soda, and spread fast. The tip to warm the baking sheet is a good one-too bad I didn’t use it. Spread to nut thinness and let cool. Result; perfect snap, crunch, never sticky, tasted like slightly burnt popcorn so still enjoyable! Seasoned nuts w/cayenne.

Lisa O

This didn't work for me. Brittle snapped but was too chewy which means I didn't get my sugar temp high enough. "Light, golden brown" is too vague. I should have used a thermometer.

Eileen

I’ve been making peanut brittle for years. It’s crucial to monitor the temperature, especially for gift giving. The sweet spot is so narrow, less than 295 the brittle sticks to your teeth, a bit more than 300 it’s almost burnt. Candy making, like baking is an exact science.

The pelicanist

I can make sugar and nuts into brittle a lot faster with my induction burner and a candy thermometer. Seems curious to use a microwave, but it’s interesting.

Allyson Smith

This is a good recipe. After reading a review about sticky brittle that didn’t really get hardened properly, I decided to get a temp on mine before spreading out on the pan. I had an old candy thermometer in my cupboard which I found to be agonizingly slow at giving a reading, then I realized I had a better tool: I found that my Thermapen instant thermometer was useful in determining that 300 degree stage. Next time I make this I would increase the nuts a bit. Maybe by a half a cup.

Amy C

I tried this but ended up saving it by breaking up the cooled brittle and cooking it on the stove to the desired temp, so for me it didn't work as written. When cool my brittle did in fact break, but it was sticky. Not something I'd feel good giving away. I respect Mr. McGee, but the directions here are thin. Sugar work really requires a candy thermometer which I have learned the hard way. I think if you are an experienced candy maker, you might know when it looked right, but I didn't.

RES

Warm the baking sheet in the oven while microwaving the mixture and pull it out as close to pouring time as possible. The brittle firms up very quickly and this will buy you a few precious seconds of spreading time.

Jenny

My batch did not get brittle— obviously didn’t microwave it long enough, but “light golden brown” is subjective. Did 3 5-min intervals plus 4 1-min intervals. Next time I’ll follow a traditional recipe and use a candy thermometer...

Modestchef

I was surprised to be using the microwave this way, but the results are first-class. It made me go out and buy McGee's book Keys to Good Cooking, which is filled with knowledge and even wisdom.

Private notes are only visible to you.

Microwave Nut 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.

Why is my microwave peanut brittle too hard? ›

Why is my peanut brittle too hard? Peanut brittle can end up too hard when the temperature gets too high during the cooking process. With a microwave peanut brittle recipe like this one, you may need to adjust the cooking times based on your microwave.

Why do 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.

How do you keep peanut brittle crispy? ›

Store the brittle in an airtight container at room temperature for up to 1 month to maintain the crisp. Moisture in the refrigerator would soften the brittle.

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.

How do you salvage soft peanut brittle? ›

I just undercooked a batch of brittle because I wasn't using a thermometer & I was afraid of burning it. Thanks to you I was confident I could save it so I broke it up and put it back in the microwave & cooked till golden brown stopping to stir. It turned out great.

Why do you put water in peanut brittle? ›

Water: Water helps the sugar completely dissolve. Salt: A pinch of salt enhances the other flavors. If you opt for salted butter, you can skip this ingredient. Peanuts: Of course, you'll need peanuts for this classic treat!

Can you soften peanuts in microwave? ›

Microwave oven roasting: Pour peanuts into colander or wire basket and wet thoroughly. Sprinkle with salt. Pour into small microwave safe casserole or pie plate. Microwave for 2 1/2 minutes; stir, microwave 2 1/2 minutes longer.

Why is my peanut brittle so thick? ›

Not spreading the mixture thinly enough: If the peanut brittle is too thick (usually because you used too small of a pan), it may not cool and harden properly. Be sure to spread the mixture as thinly as possible in the pan. 4. Humidity: Humidity can affect the hardening process of the peanut brittle.

Why do people put co*ke in peanuts? ›

History. The combination is believed to have developed in the South during the 1920s, as a snack for blue-collar workers that did not require them to wash their hands. It quickly became popular as a summer snack, especially in rural areas. The snack became an internet trend in 2018.

How Long Will homemade peanut brittle keep? ›

To store: Store peanut brittle (once it's completely cooled) 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 you use parchment paper when making peanut brittle? ›

Place a piece of parchment paper over the hot brittle and use a rolling pin to roll the peanut brittle into a 3/8-inch thick flat layer. Use a sharp chef's knife to partially cut the brittle while it is still warm. Allow it to cool completely before coating it with chocolate.

What to do if peanut brittle didn't harden? ›

Why Is My Peanut Brittle Chewy / Sticky / Didn't Harden?
  1. Break up the brittle and place it in a glass, microwave-safe bowl. Heat on HIGH heat 1-2 minutes until soft and semi-melted. ...
  2. Transfer the semi-melted brittle to a a clean saucepan. ...
  3. Immediately remove from the heat and add additional 1/2 teaspoon of baking soda.
Nov 18, 2022

Why did my peanut brittle not turn brown? ›

If your peanut brittle reached 311°F but is a pale milky color, it's likely the candy cooked too quickly. It reached the correct temperature but didn't cook long enough to undergo sufficient Maillard reactions and develop the characteristic brown color and rich, roasted flavor. Next time, cook at a lower temperature.

Why is my peanut brittle bitter? ›

Those other liquid sugars have impurities that will burn at the higher temperature of making caramel, leading to a bitter-tasting brittle.

Why is my peanut brittle gooey? ›

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. This is why eliminating moisture anywhere you can is our top tip on how to store peanut brittle.

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? ›

Carefully pour the hot mixture onto the prepared pan and use a knife or spoon to quickly (and carefully!) spread the mixture into an even layer. Allow to cool completely (at least 30 minute) before breaking apart and eating. Store the completely cooled peanut brittle in an airtight container.

Why did my peanut butter fudge not get hard? ›

The amount of time you cook fudge directly affects its firmness. Too little time and the water won't evaporate, causing the fudge to be soft. Conversely, cook it too long and fudge won't contain enough water, making it hard with a dry, crumbly texture.

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