Microwave Peanut Brittle


This microwave peanut brittle is a wonderful recipe, but you should only make it once a year because you can't stop eating it!

Prep Time:
10 mins
Cook Time:
10 mins
Total Time:
20 mins
1 1/2 pounds

Did you know you can make gift-worthy peanut brittle in the microwave? Well, you can! This microwave peanut brittle recipe is so delicious, nobody will guess it came together in fewer than 10 minutes.

Microwave Peanut Brittle

Microwave Peanut Brittle Ingredients

This microwave peanut brittle recipe is easy to make with just six easy-to-find ingredients:

· Sugar: This microwave peanut brittle starts with a cup of white sugar.
· Corn syrup: Light corn syrup lends moisture and adds even more sweetness.
· Peanuts: Use salted peanuts if you can find them. If you can't, add a pinch of salt.
· Butter: A teaspoon of butter lends moisture and richness.
· Vanilla: Vanilla extract enhances the overall flavor.
· Baking soda: Baking soda creates tiny air bubbles, giving this peanut butter perfect crunch.

How to Make Peanut Brittle In the Microwave

You'll find the full, step-by-step recipe below — but here's a brief overview of what you can expect when you make this incredibly easy peanut brittle:

1. Combine the sugar and corn syrup in a microwave-safe bowl. Microwave for 4 minutes, stirring halfway through cooking time.
2. Add the peanuts. Microwave for another 3.5 minutes.
3. Add the butter and vanilla. Microwave for another 90 seconds.
4. Stir in the baking soda. Immediately spread on a greased baking sheet.
5. Cool completely and break into pieces.

Tip: Watch the peanut brittle closely during the microwaving process so the sugar doesn't burn.

How to Store Microwave Peanut Brittle

Store the (completely cooled) peanut brittle in an airtight container at room temperature for up to one month. If you're gifting the peanut brittle, be sure to include the date you made it and storage instructions.

Allrecipes Community Tips and Praise

"This is my third holiday season making this peanut brittle," says justyummy. "I used to spend hours over the stove trying to get it right and it never turned out right. This is absolutely perfect!!!"

"Excellent," according to JENNJOR. "So easy to make and is delicious! If you like your peanut brittle to be a little thicker, increase the baking soda to 1 1/2 teaspoons."

"If I could give this 6 stars, I would," raves D. English. "It is EXCELLENT! We made five batches and put them in a pretty container for a Christmas present. Be sure to tilt the cookie sheet to spread instead of spreading with a knife. Spreading with a knife destroys the crunchy texture."

Editorial contributions by Corey Williams


  • 1 cup white sugar

  • ½ cup light corn syrup

  • 1 cup salted peanuts

  • 1 teaspoon butter

  • 1 teaspoon vanilla extract

  • 1 teaspoon baking soda


  1. Grease a cookie sheet; set aside. Combine sugar and corn syrup in a 2-quart microwave-safe bowl.

  2. Microwave on high for 4 minutes, stirring halfway through cooking time. Stir in peanuts and microwave on high for 3 1/2 minutes more. Stir in butter and vanilla: microwave for 1 1/2 minutes.

  3. Stir in baking soda until light and foamy; immediately pour onto the prepared cookie sheet and spread thin. Cool completely. Break into pieces, and store in an airtight container.

Nutrition Facts (per serving)

89 Calories
3g Fat
15g Carbs
1g Protein
Nutrition Facts
Servings Per Recipe 24
Calories 89
% Daily Value *
Total Fat 3g 4%
Saturated Fat 1g 3%
Cholesterol 0mg 0%
Sodium 107mg 5%
Total Carbohydrate 15g 5%
Dietary Fiber 1g 2%
Protein 1g
Calcium 4mg 0%
Iron 0mg 1%
Potassium 41mg 1%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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