Old Fashioned Peanut Brittle Recipe (2024)

By Rebecca Hubbell on | Updated | Rate Recipe

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Homemade Peanut Brittle is perfect for making and sharing around the holidays! A crunchy candy layer is loaded with roasted peanuts for a sweet and salty treat.

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Homemade Peanut Brittle is perfect for making and sharing around the holidays! A crunchy candy layer is loaded with roasted peanuts for a sweet and salty treat.

So you love making candy for the holidays? Try my English Butter Toffee and Crockpot Candy recipes!

Old Fashioned Peanut Brittle Recipe (2)

I love making this Peanut Brittle recipe in winter because it’s so nostalgic and fun to share.

Peanut Brittle Candy also makes a wonderful hostess gift. Just stash a handful or two in a tin or a mason jar and tie with a ribbon!

While Peanut Brittle only contains a handful of ingredients, following the process is key for the perfect texture. But as long as you use a candy thermometer for accuracy, this recipe turns out great!

Old Fashioned Peanut Brittle Recipe (3)

Table of Contents

Peanut Brittle Ingredients:

  • Granulated sugar – The base of this treat!
  • Light corn syrup – Reacting with the sugar, corn syrups helps create that crack-able texture.
  • Dry roasted peanuts – Deliciously salty to balance out the sweetness! You can also use raw Spanish peanuts.
  • Salt – To emphasize the flavor contrast.
  • Unsalted butter – I prefer using unsalted butter and adding my own salt so I can control exactly how much goes in.
  • Baking soda – The secret to making it brittle!
Old Fashioned Peanut Brittle Recipe (4)

How To Make Peanut Brittle:

  1. In a deep skillet, slowly cook sugar, corn syrup, and 1 cup of water on medium-high heat, stirring until the sugar dissolves.
  2. Bring to a boil, and continue cooking until the sugar mixture reaches the soft-ball stage on a candy thermometer (235 degrees F), about 10 minutes
  3. Add in the peanuts and salt. Cook until the temperature reaches 300 degrees (the hard crack stage), stirring constantly, about 10 more minutes until it’s a deep golden brown. (Pay attention to this part as the brittle will burn if cooked too long).
  4. Remove from heat and add in the butter and baking soda; stir to blend. The mixture will bubble up.
  5. Pour the brittle mixture onto the prepared cookie sheet and spread it out with a spatula and allow the brittle to cool for about 30 minutes until it’s cool to the touch.
  6. Once cooled completely, slide a spatula underneath to lift the brittle and break it into pieces. Store covered at room temperature.

RECIPE TIP: A candy thermometer is going to be necessary for this recipe! It will help ensure that your temperatures are accurate and you get perfect brittle instead of a soft or burnt mess.

Old Fashioned Peanut Brittle Recipe (5)

Frequently Asked Questions:

What does baking soda do?

It’s all chemistry!

Baking soda reacts with the other ingredients to create tiny air bubbles so it easily cracks. This prevents it from becoming a rock-solid hunk of sugar.

What temperature is the brittle stage?

Called the hard-crack stage, it should get to 300 to 310 degrees F to achieve the proper texture.

How long does it take to harden?

About 20 to 30 minutes.

Why is my brittle so hard?

See above — you may not have added enough baking soda!

How do you prevent it from sticking to the pan?

Use a generous amount of cooking spray and be sure to coat the sides of the pan as well. You can also use parchment paper or a silicone mat, but DON’T use wax paper, which will melt.

How long does peanut brittle last?

Store in an airtight container at room temperature, it should keep for 2 months!

Old Fashioned Peanut Brittle Recipe (6)

More Homemade Candy Recipes:

  • Crockpot Candy – Chocolate and almond bark are melted in the Crock-Pot with peanuts then harden into a crunchy treat.
  • Irish Potato Candy – Airy coconut balls coated in cinnamon look just like potatoes … perfect for Saint Patrick’s day!
  • Pretzel Turtles – Made with pretzels, pecans, and Rolos, you’ll want to keep popping ‘em.
  • Cookie Dough Truffles – A must for cookie dough fans!
  • Candied Lemon Slices – A beautiful, delicious garnish for drinks and desserts.

Peanut Brittle

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Old Fashioned Peanut Brittle Recipe (8)

5 from 2 votes

Peanut Brittle


Author Rebecca Hubbell

Course Dessert

Cuisine British

Prep Time 5 minutes minutes

Cook Time 25 minutes minutes

Cooling Time 30 minutes minutes

Total Time 1 hour hour

Homemade Peanut Brittle is perfect for making and sharing around the holidays! A crunchy candy layer is loaded with roasted peanuts for a sweet and salty treat.

Equipment

  • Deep skillet

  • Candy Thermometer

  • Baking Sheet

  • Spatula

Ingredients

Instructions

  • Prepare a large 17” rimmed cookie sheet by spraying it with a nonstick cooking spray, spray the edges as well. Set aside.

  • In a deep skillet, slowly cook sugar, corn syrup, and 1 cup of water on medium-high heat, stirring until the sugar dissolves. bring to a boil and continue cooking until the candy thermometer reaches the soft-ball stage (235°F), about 10 minutes.

  • Add in the peanuts and salt. Cook until the candy thermometer reaches the hard crack stage (300 to 310°F), stirring constantly, about 10 more minutes. (Pay attention to this part as the brittle will burn if cooked too long).

  • Remove from heat and add in the butter and baking soda; stir to blend. The mixture will bubble up.

  • Pour the brittle mixture onto the prepared cookie sheet and spread it out with a spatula and allow the brittle to cool for about 30 minutes until it’s cool to the touch.

  • Once cooled completely, slide a spatula underneath to lift the brittle up and break it into pieces. Store covered at room temperature.

Notes

  • Use a generous amount of cooking spray and be sure to coat the sides of the pan as well. You can also use parchment paper or a silicone mat, but DON’T use wax paper, which will melt.
  • Store in an airtight container at room temperature, it should keep for 2 months!

Nutrition

Calories: 219kcal | Carbohydrates: 36g | Protein: 4g | Fat: 8g | Saturated Fat: 1g | Cholesterol: 2mg | Sodium: 146mg | Potassium: 99mg | Fiber: 1g | Sugar: 34g | Vitamin A: 18IU | Calcium: 10mg | Iron: 1mg

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Old Fashioned 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.

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

Baking soda also raises the pH of the mixture, promoting the Maillard reaction and giving the brittle its particular color and flavor profile. Finally, pour the mixture onto a marble slab or cookie sheet so that it will cool quickly and evenly.

How do you keep peanut brittle crispy? ›

5 Tips on How to Store Peanut Brittle
  1. #1 - Store in an airtight container. ...
  2. #2 - Separate your brittle. ...
  3. #3 - Avoid using the refrigerator. ...
  4. #4 - But, if needed, use the freezer. ...
  5. #5 - Overall, eliminate opportunities for moisture.
Nov 10, 2022

Why did my peanut brittle not turn brown? ›

If you have this issue, next time, use a thermometer to make sure the peanut brittle mixture gets to 300°F. Why is my peanut brittle light colored? That's because you did not heat the mixture up enough, and the sugars did not fully caramelize. This is what gives peanut brittle the beautiful golden brown color.

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.

Why is my peanut brittle still soft? ›

Didn't combine ingredients right. Didn't get it hot enough. You have to hit hard crack stage heat or it's not going to harden.

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.

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.

Why is my peanut brittle too thick? ›

As mentioned in “how to make peanut brittle”, it's very important to move fast after the peanuts and baking soda are mixed in. If not, the peanut brittle will turn out too thick and clumpy. Don't play the guessing game and use a candy thermometer instead. This will ensure your peanut brittle turns out perfectly golden.

Should homemade peanut brittle be refrigerated? ›

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.

What is the best pan for making peanut brittle? ›

Heavy 6 quart Dutch Oven pot. Mine is an old 1970's Club Aluminum. It's perfect! You need a heavy THICK pot so it won't scorch.

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.

Why does my peanut brittle have bubbles? ›

As the sugar is cooking and begins turning amber in color it accumulates small amounts of acid, and that acid reacts chemically with the alkaline baking soda releasing about a zillion minuscule bubbles of CO2 that get trapped, making the sugar porous and, well… brittle.

Why is my brittle bitter? ›

Alternatively, cooking brittle at too high of a temperature can lead to a scorched or bitter flavor. Butter your table top before pouring the batch to prevent it from sticking to the table. Brittle that is too hard and thick can happen if you use a fan to cool your mixture, allowing it to set too quickly.

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 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.

Is peanut brittle supposed to be hard? ›

Peanut Brittle is a smooth, flat candy (similar to toffee), with peanuts in it, that is cooked on the stovetop and poured onto a sheet pan to cool. Once it cools it's broken into small individual-size pieces of hard candy and lasts at room temperature for several weeks.

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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