Easy Microwave Peanut Brittle

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This easy microwave peanut brittle recipes is a completely fail proof recipe that everyone loves. The sweet crunchy brittle and salty peanuts are the perfect match.

This treat has been a holiday staple for my family for as long as I can remember. My mom made it for us every single year. She included it in holiday baskets for friends, we took it to holiday parties, and we devoured it by the plateful.

Looking for holiday goodies? Be sure to try this Winter Hot Chocolate Sharing Board and this festive Christmas Tree Charcuterie Board.

Easy Microwave Peanut Brittle
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If you’re looking for a great new addition to your Christmas cookies, or something easy to make that you can share in gift baskets, or even to take to a new neighbor as a welcome, I can tell you you’re going to love this peanut brittle.

We use the microwave for this recipe. It only takes about 10 minutes from start to finish, and it works every time.

Ingredients in Peanut Brittle

peanut brittle ingredients

Peanut Brittle is candy. It’s made almost entirely of sugar. We use two types of sugar, light corn syrup and white granulated sugar.

For the corn syrup, we use Karo brand, which is light corn syrup that you can get almost anywhere. If you can’t find Karo, it’s fine to use a different brand, just be sure not to use dark corn syrup.

You also need peanuts for this recipe. You can use salted peanuts for a more savory slant. Already roasted peanuts can sometimes become too roasted in this recipe, so it’s best to use boiled peanuts, but it won’t hurt to use roasted.

It’s important to have all of the ingredients at the ready for this recipe, because each step needs to be done quickly. It also needs to be bubbling hot when it’s poured onto the baking sheet.

How to Make Microwave Peanut Brittle

The joy of this recipe happens when you mix the baking soda into the mixture and it bubbles up into a light and airy mixture.

The bubbles are what make the brittle so crunchy and light. It’s easy to eat because the bubbles make it crisp and not hard or too sticky. So it’s of the utmost importance to preserve the bubbles.

You’re going to need a large bowl that’s microwave safe. The bowl needs to be many times larger than the amount of ingredients because of the bubbling. It will triple in volume as it bubbles up.

Step One: Prepare a Baking Sheet

Start by preparing the baking sheet. I use a regular medium-sized cookie sheet (not a flat one with no walls). Cover the base of it with tin foil. Then butter or grease the whole top of the foil. This will prevent the candy from sticking. Set the baking sheet aside.

Step Two: Heat the Ingredients to Candy Temp

The first stage of the recipe is to heat the sugar to boiling and get the temperature up to candy stage.

Combine the white sugar and corn syrup in a bowl. Microwave those together for 4 minutes on high. This works for most 800 to 1000 watt microwaves. Your microwave might differ.

boiling corn syrup

After 4 minutes, add the cocktail peanuts and stir. Microwave for another 3 minutes.

It looks like a lot of peanuts when you add them, but don’t worry, the mixture triples in size when you add the baking soda, which makes the peanuts more sparse.

peanut brittle candy

Stir in the butter and vanilla. Microwave for another minute.

The mixture should have reached 300 degrees F (149 degrees C) on a candy thermometer. This is the point at which the candy is perfect temperature. It will have turned a light golden brown.

Don’t exceed this temperature or the candy will begin to burn.

Step Three: Add the Baking Soda

add baking soda to peanut brittle

Once you take it out for the last time, you need to get the next steps done as quickly as possible, with the candy is still super hot. So get ready to stir and pour.

Add the baking soda and stir until light and foamy. Be sure not to over stir it and lose all those wonderful little bubbles. This is what makes the brittle so crunchy and easy to eat.

Step Four: Pour Onto Baking Sheet

pour peanut brittle onto baking sheet

Pour the mixture onto the prepared baking sheet. I pour it in a zig zag pattern down the center of the tray so it’s easy to pick up the tray and tilt it side to side to get the candy to spread out evenly.

Don’t pour it all in the middle and then try to spread it out from there. You can’t use a spatula or spoon to spread it – that will break all the bubbles. You need to tilt the tray to spread it.

Step Five: Cool & Break Into Pieces

peanut brittle

Now you just have to leave it to cool completely so it can get brittle. It doesn’t take long . 15 minutes or so. Once it’s completely cooled. It can be broken up into pieces.

The size of the pieces depend on how much you want to eat at a time. We break ours into about 2″ pieces. That’s perfect for grabbing a piece and walking away to eat it. If you stand next to the tray to eat it, you might find it’s gone before you realize it.

Tips for Making Perfect Peanut Brittle

  • Don’t over stir! The bubbles are very important to the success of this recipe. Once you’ve added the baking soda and it bubbles up, don’t stir it anymore.
  • Don’t use a spatula or spoon to spread the candy on the tray. Once you’ve added the baking soda, you shouldn’t touch it anymore. Spread it by tilting the sheet.
  • Every microwave is different, so you might find that you need to cook your sugar for less or more time. The candy needs to reach 300 degrees F on a candy thermometer before you add the baking soda and pour it out.
  • If you’ve cooked it for too long, the candy will begin to turn dark brown and smell burned.
  • If you don’t cook it long enough, it won’t be a golden color yet.
  • You can pour the candy onto a silicon mat to avoid the tin foil.
  • There’s no need to put the candy into the refrigerator or cool it off. It will become brittle at room temperature.
  • If you make a second batch, it make take 1-2 minutes less time to cook because the bowl and microwave are already warm. Adjust your time accordingly.

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easy microwave peanut brittle

Easy Microwave Peanut Brittle

This easy peanut brittle recipe is made in the microwave in just a few minutes and turns out crisp and delicious every time.
5 from 11 votes
Print Pin Rate
Course: Snack
Cuisine: American
Keyword: Peanuts
Prep Time: 5 minutes
Cook Time: 8 minutes
Total Time: 13 minutes
Servings: 10 servings
Calories: 215kcal
Author: Laura

Ingredients

  • 1 cup sugar
  • 1/2 cup light corn syrup we use Karo
  • 1 cup cocktail peanuts
  • 1 tsp butter
  • 1 tsp vanilla
  • 1 tsp baking soda

Instructions

  • Prepare a baking sheet with tin foil and coat with a thin layer of oil or spray with non-stick cooking spray.
  • Mix the ingredients, except for the baking soda, together in a casserole dish or large microwaveable bowl.
  • Microwave for 4 minutes on high. Stir and microwave for 3 minutes. Stir and microwave 1 minute.
  • Quickly stir in baking soda and pour onto tinfoil. This needs to be done quickly before the mixture begins to harden. Using a spatula, spread into a thin even layer.
  • Let the brittle harden for at least 30 minutes. Once cooled, break into pieces.

Notes

  • Every microwave is different, so you might find that you need to cook your sugar for less or more time. The candy needs to reach 300 degrees F on a candy thermometer before you add the baking soda and pour it out.
  • If you’ve cooked it for too long, the candy will begin to turn dark brown and smell burned.
  • If you don’t cook it long enough, it won’t be a golden color yet.
  • You can pour the candy onto a silicon mat to avoid the tin foil.
  • There’s no need to put the candy into the refrigerator or cool it off. It will become brittle at room temperature.

Nutrition

Calories: 215kcal | Carbohydrates: 36g | Protein: 4g | Fat: 8g | Saturated Fat: 1g | Cholesterol: 1mg | Sodium: 203mg | Potassium: 113mg | Fiber: 1g | Sugar: 33g | Vitamin A: 12IU | Calcium: 17mg | Iron: 1mg

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Easy Microwave Peanut Brittle

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