Microwave Peanut Brittle

Featured in Indulgent Dessert Recipes to Satisfy Any Sweet Tooth.

This peanut brittle skips the stovetop hassle and uses a microwave for quick prep. With six ingredients and just about 8 minutes, you'll have a crunchy treat in no time.

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Updated on Tue, 18 Mar 2025 18:55:04 GMT
Crunchy slices of peanut brittle with peanuts and sea salt sprinkled on top, set on parchment paper. Pin it
Crunchy slices of peanut brittle with peanuts and sea salt sprinkled on top, set on parchment paper. | chefmelt.com
  • Check out my quick trick for awesome peanut brittle using your microwave! I found this method during a crazy holiday rush and now it's what I always use. You won't need any fancy candy thermometer - just give it 20 minutes and you'll have crunchy, buttery brittle that's as good as old-fashioned versions. This trick really works wonders, especially when you need fast handmade gifts.

What Makes This Approach So Good

  • This isn't your regular peanut brittle - it's the simplest version you'll ever try. I'm thrilled that it all happens in the microwave instead of watching a hot stove forever. And it needs basic stuff you probably already have at home. Whenever I make this, everyone's shocked it wasn't done the old-school way. It's great when you want something fancy but can't spend all day cooking.

Round Up These Items

  • Peanuts: Go for the roasted and salted kind for tastier results.
  • Regular Sugar: Just normal white sugar does the job perfectly.
  • Real Butter: Don't use anything else - it really improves everything!
  • Corn Syrup: This helps our brittle turn out silky and just right.
  • Baking Soda: The hidden trick for airy, crispy texture.
  • Vanilla: A tiny bit makes it taste even better.

Let's Create Something Amazing

Getting Started
Use your largest microwave bowl that's safe to heat up - you'll need the extra space for bubbling! Combine your sugar with corn syrup until it looks damp and sandy. Microwave for 4 minutes and your kitchen will start smelling wonderful.
Time For Peanuts
Mix in your peanuts and stir everything well. Back to the microwave for around 3 minutes. Look for a golden amber color similar to honey. Your peanuts should smell warm but not burnt.
Adding Butter
Put in your butter and vanilla and watch it bubble up! Another minute in the microwave. Your mixture should be going wild with bubbles now - that's exactly right.
The Exciting Part
Now for the fun bit! Add your baking soda and stir super fast. It will grow and become lighter colored - that's just what we want. Move quickly because it starts hardening soon!
Finishing Up
Dump everything onto your greased baking sheet and flatten it out. Don't grab it - it's extremely hot! Now comes the tough part - waiting for it to cool down completely.

My Top Tricks

  • I've made this countless times and here's what I've figured out. Keep an eye on that color because it can turn from golden to ruined in moments. Set up everything before you begin because once you add the baking soda, you gotta work fast! Use parchment paper or butter on your pan - you'll thank yourself during cleanup. If your brittle stays soft, it probably needed more cooking time. Since all microwaves work differently, you might need to tweak your timing a bit.
A scattered arrangement of peanut brittle pieces with a glossy caramel coating and chopped peanuts on a parchment paper background. Pin it
A scattered arrangement of peanut brittle pieces with a glossy caramel coating and chopped peanuts on a parchment paper background. | chefmelt.com

Keeping It Fresh

  • The cool thing is this brittle stays good for weeks! Just keep it in a sealed container somewhere cool and dry. Put wax paper between layers so they don't stick together. Making it as gifts? Grab some cute holiday containers or clear bags, tie a ribbon, and you've got the perfect homemade present. I always make more than I need because it gets eaten so quickly!

Flawless Results Always

  • This microwave peanut brittle is my go-to trick during the holidays. It's so fast and simple you can make a batch whenever you want something special. It tastes great with coffee, works wonders on ice cream, and is totally addictive by itself. Once you try making brittle this way, you'll never want to use the stove again!

Frequently Asked Questions

→ What does baking soda do?

It creates lots of little air pockets, making the brittle crispier and simpler to break apart.

→ Can I swap peanuts for other nuts?

Absolutely! Try using almonds, hazelnuts, or pecans instead for a different twist.

→ Why isn’t my brittle setting properly?

The mixture needs to get hot enough. If it doesn’t reach the right temp, it’ll stay soft instead of hardening.

→ How long does it last?

If stored in a sealed container at room temperature, you’ve got about 6 weeks to enjoy it. Just keep it dry and away from heat.

→ Why the rush after adding baking soda?

Once the baking soda goes in, the mixture starts to solidify fast, so you need to spread it out quickly.

Microwave Peanut Brittle

An effortless peanut brittle recipe made in the microwave. Packed with peanuts and crispy goodness, it's great for holidays or anytime snacking.

Prep Time
5 Minutes
Cook Time
8 Minutes
Total Time
13 Minutes

Category: Dessert Recipes

Difficulty: Intermediate

Cuisine: American

Yield: 16 Servings (1 batch)

Dietary: Vegetarian, Gluten-Free

Ingredients

01 1 teaspoon vanilla flavor.
02 1/2 cup light syrup (like golden syrup).
03 1 teaspoon baking soda powder.
04 1 cup of roasted peanuts with salt.
05 1 tablespoon softened butter.
06 1 cup of regular white sugar.

Instructions

Step 01

Cover a flat baking sheet with parchment paper or a silicone mat.

Step 02

In a large microwave-safe glass bowl, mix together sugar and syrup.

Step 03

Microwave the mix for 4 minutes on high power.

Step 04

Add peanuts to the bowl and microwave again for 3 to 4 minutes until it turns golden.

Step 05

Quickly mix in the butter and vanilla, then microwave for 1 more minute.

Step 06

Stir in the baking soda swiftly.

Step 07

Immediately pour the mixture onto the pan you've prepared.

Step 08

Use a spatula to spread the mix evenly and thinly.

Step 09

Allow it to cool completely, which should take about an hour.

Step 10

Once set, break the hardened candy into smaller pieces to serve.

Notes

  1. You don’t need a fancy candy thermometer for this!
  2. Perfect for gifting!
  3. Can be stored for a long time.
  4. Quickly made in the microwave.

Tools You'll Need

  • Microwave oven.
  • Baking tray.
  • Silicone mat or parchment lining.
  • Large glass mixing bowl.

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Contains peanuts.
  • Includes dairy from butter.

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 138
  • Total Fat: 5 g
  • Total Carbohydrate: 22 g
  • Protein: 3 g