Peanut Brittle Recipe (2025)

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.

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.

Brittle loves to soak up moisture, making it chewy. If you notice it getting sticky, it's likely exposed to too much humidity.

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.

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.

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.

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!

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.

It is important to coat cookie sheets with butter and put in the freezer to get them really cold before you need to pour the brittle. After you pour the candy you should put the pans in the fridge or outside if it is cold, so the brittle will set up quickly and stay fluffy.

You will want the cookie sheet to be non-stick. Use parchment paper, a silicone baking sheet or a greased cookie sheet. Spread the peanut brittle as thin as you can. Immediately add your sea salt.

How to break peanut brittle? ›

Using buttered metal spatula or 2 forks, gently spread and stretch brittle to thin layer. Allow to cool completely. Break brittle into pieces and store in airtight container.

The vanilla can be omitted, but I personally like the added layer of flavor it adds. I also kind of like how it sizzles angrily when I add it to the hot candy. Be sure to grease or butter the heck out of the baking sheets you use for cooling. This will make it easier to get out of the pan.

Properly stored peanut brittle can last for several weeks, so you can enjoy it over time.

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. Allow the brittle to cool completely and store it in a freezer safe, airtight container.

I've learned that brittle is better when made on a cool, dry day. When I've made the candy on a warmer, humid day, it tends to be a stickier brittle. This is because the brittle takes longer to cool, and it reaches a point where it is no longer evaporating moisture into the air.

Take the temperature

With peanut brittle, there is a point in the process where you add baking soda to the bubbling mixture of prior ingredients. That mixture needs to be no more than 305 degrees Fahrenheit to result in a crunchy candy.

So, I Googled Salvaging Undercooked Peanut Brittle and followed Tiffany's helpful instructions to throw the pieces back in the pan, turn the heat up and stir, stir, and stir to a raging boil and wait to pour it in the pan until it reaches 300 degrees.

Why is my peanut brittle soft? If your peanut brittle is too soft, you didn't cook it long enough. It's important to use a candy thermometer and cook the sugar mixture until it reaches the hard crack stage.

I started on medium heat, but turned it down to a bit below medium. KEEP STIRRING. While it's still semi solid you MUST keep stirring or it WILL burn. I thought it was never going to turn into a liquid, but of course it did.