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Hello! I’m Anjali. I’m a board certified health coach, author, wife, mom and food lover from the SF Bay area (now living in Seattle, WA!); with a passion for delicious food and a desire to make healthy eating easy, tasty and fun! Learn more about me here and stay for a while!

Anjali Shah

Microwave Peanut Butter Fudge Recipe (Easy)

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This microwave peanut butter fudge is such an easy recipe! Finished off with a creamy texture that is accented by buttery and sweet flavors, this smooth peanut butter & chocolate fudge is delicious and perfect for any time of the year.

easy microwave peanut butter fudge cut into squares on parchment paper

Sweet and made within minutes, this creamy peanut butter fudge is one of my favorite dessert recipes because it is so easy to make and tastes stellar every single time. Made with unsalted butter, powdered sugar, vanilla, and natural peanut butter, you will not be able to get enough of this east microwave peanut butter fudge recipe.

The options are limitless with this peanut butter fudge because you can add sea salt flakes, chocolate ganache, shredded coconut and so much more: whatever you want! This recipe comes together within 15 minutes so the next you have a sweet tooth, consider this simple recipe.

Just like your some of your favorite traditional fudge recipes, you’ll want to make sure you make this fudge for your favorite holidays and occasions. This fudge is great for gift-giving and is perfect for the dessert table.

Why You’ll Love This Recipe

  • Gluten-Free: You’ll love this gluten-free dessert! You don’t have to worry about wheat in this recipe.
  • Easy to Make: With only 5 ingredients and simple, fool-proof steps, this easy peanut butter fudge recipe is perfect for when you don’t have a lot of time to make a dessert, but want to keep a dazzling wow factor.
  • Prepared in Minutes: Since this recipe is prepared in the microwave, it’s almost effortless! Just a few trips back and forth to the microwave and fridge. The prep time is so easy!
  • Delicious: Rich peanut butter is drizzled with melted chocolate for a nutty and sweet combination. The powdered sugar adds just enough sweetness to one of the easiest traditional fudge recipes out there!

How to Make the Best Microwave Peanut Butter Fudge

Ingredients

This no-bake peanut butter fudge uses only a handful of simple ingredients! You really won’t need much for this easy fudge.

ingredients for microwave peanut butter fudge

Butter: You can use either salted or unsalted butter for this easy microwave peanut butter fudge. Both are fine!

Peanut Butter: I used creamy peanut butter, but you could also try crunchy peanut butter for some additional textures.

Powdered Sugar: You’ll want to make sure the powdered sugar is sifted! The powdered sugar adds just the perfect amount of sweetness needed in this recipe.

Vanilla Extract: What’s a dessert recipe without vanilla extract? The vanilla extract adds flavors to this recipe that are well-rounded and balanced.

Instructions

Read the recipe card for the full details for this easy recipe.

Prep & Mix: chop the butter into small pieces. Next, mix peanut butter and butter in a large microwave-safe bowl. (I used a 4 quart bowl).

peanut butter and butter in a bowl

Microwave: Place the bowl in the microwave and microwave fudge on high heat in 30-second intervals until melted. Stir and repeat.

ingredients in a mixing bowl

Add Sugar: Carefully, remove the bowl from the microwave and add the powdered sugar, salt, and vanilla extract. Stir with a wooden spoon until combined.

powdered sugar added to bowl

Move to Baking Dish: Line 8-inch square pan with parchment or wax paper and transfer the peanut butter mixture into the pan or baking dish.

fudge added to baking pan

Refrigerate: Next, place the fudge mixture in the refrigerator for at least two hours, until the fudge sets. Finally, cut the fudge into 20 small squares. Enjoy!

easy microwave peanut butter fudge cut into squares on parchment paper

Note: If you love the flavor of Reese’s peanut butter cups, you can drizzle dark chocolate over this delicious peanut butter fudge to make Dark Chocolate Peanut Butter Fudge!

easy microwave chocolate peanut butter fudge cut into squares on parchment paper

Recipe FAQs

Why won’t my peanut butter fudge harden?

It’s possible that the fudge mixture didn’t cook long enough! Also, make sure the fudge has had plenty of time to set in the refrigerator.

Should I refrigerate peanut butter fudge?

If you’re planning to enjoy this fudge over a few weeks, you will want to make sure to keep the fudge refrigerated.

How long does fudge last?

When refrigerated, this smooth peanut butter fudge can last up to 2 weeks!

How long is fudge good for not refrigerated?

Even though fudge contains perishable ingredients (butter/dairy), the sugar helps to make the fudge more shelf stable. If you keep the fudge in an airtight container, layered with aluminum foil or parchment paper, and keep it in a cool dark space (like a cupboard or the pantry), it will last for about 1 week at room temperature.

How can you tell if peanut butter fudge is bad?

If the fudge is bad, then it will have some discoloration.

Variations and Substitutions

Enhance Flavors: Add some vanilla frosting if you prefer to step this microwave peanut butter fudge up a notch. You could also stir in some sweetened condensed milk for a creamy version. Don’t have ganache? Just melt some dark or milk chocolate chips (or any type of chocolate chip) and drizzle the melted chocolate over the fudge! White chocolate would also taste good here.

Make It Vegan: For a vegan version, you could try using vegan butter with vegan sugar.

Make It Keto: For a keto version, use powdered Swerve instead of regular sugar.

Additions and Toppings: Feel free to add some throw in some sea salt flakes, shredded coconut, chopped nuts, or chocolate chips to the top of the fudge for bonus flavors. This fudge would also taste good with a little brown sugar added.

Expert Tips for Microwave Peanut Butter Fudge

  • Keep the pieces of fudge in an airtight container in the fridge for up to 2 weeks.
  • For best results, make sure the peanut butter and butter mixture is melted all the way.
  • Use a candy thermometer if you need to make sure the liquid is warm enough.
  • Use a sharp knife when cutting the fudge into small or large pieces.
  • Make sure to use caution when heating the peanut butter and butter in the microwave. Don’t burn yourself!
  • The corner pieces are the best part!
  • Fudge freezes well! Just place the fudge in a freezer-safe storage container or bag and freeze for up to two to three months.
  • If you like a less-sweet fudge, cut the amount of sugar in half. Then each piece of fudge will only have 219 calories and 7.5 grams of sugar!
easy microwave peanut butter fudge cut into squares on parchment paper

More Easy Dessert Recipes!

If you have tried this Creamy Microwave Peanut Butter Fudge Recipe, or any other recipe on my blog, then please rate it and let me know how it turned out in the comments below! Then, FOLLOW ME on social media on FACEBOOKTWITTERINSTAGRAM, and PINTEREST to see more delicious, healthy, family-friendly food!

easy microwave peanut butter fudge cut into squares on parchment paper
Print Recipe
5 from 5 votes

Easy Microwave Peanut Butter Fudge

This microwave peanut butter fudge is such an easy recipe! Finished off with a creamy texture that is accented by buttery and sweet flavors, this smooth peanut butter & chocolate fudge is delicious and perfect for any time of the year.
Prep Time15 mins
Waiting Time2 hrs
Total Time2 hrs 15 mins
Course: Dessert
Cuisine: American
Servings: 20 squares
Calories: 242kcal
Author: Anjali Shah

Ingredients

  • 1 cup butter
  • cup peanut butter
  • 2 cups powdered sugar sifted
  • ½ teaspoon vanilla extract
  • ¼ teaspoon salt

Instructions

  • First, chop the butter into small cubes.
  • Add the butter and peanut butter into a medium-sized microwave-safe bowl.
  • Place it in the microwave for 30 seconds, stir, and repeat until it is all melted and combined.
  • Remove the peanut butter mixture from the microwave and add powdered sugar, salt, and vanilla extract. Stir until well combined.
  • Prepare an 8" square pan with parchment paper. Place the mixture in the pan and extend it evenly.
  • Place the fudge in the refirigerator for at least two hours until it hardens.
  • Cut the fudge into 20 small squares.
  • Enjoy!

Notes

Expert Tips 
  • Keep the pieces of fudge in an airtight container in the fridge for up to 2 weeks.
  • For best results, make sure the peanut butter and butter mixture is melted all the way.
  • Use a candy thermometer if you need to make sure the liquid is warm enough.
  • Use a sharp knife when cutting the fudge into small or large pieces.
  • Make sure to use caution when heating the peanut butter and butter in the microwave. Don’t burn yourself!
  • The corner pieces are the best part!
  • Fudge freezes well! Just place the fudge in a freezer-safe storage container or bag and freeze for up to two to three months.
  • If you like a less-sweet fudge, cut the amount of sugar in half. Then each piece of fudge will only have 219 calories and 7.5 grams of sugar!

Nutrition

Serving: 1piece | Calories: 242kcal | Carbohydrates: 16g | Protein: 5g | Fat: 19g | Saturated Fat: 8g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 7g | Trans Fat: 1g | Cholesterol: 24mg | Sodium: 199mg | Potassium: 129mg | Fiber: 1g | Sugar: 14g

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Dessert ·

Indulge your sweet tooth with some of my lightened-up treats. From gluten-free brownies to fruity crumbles, there’s something for everyone.

Be sure to check out holiday favorites like my healthy pumpkin pie!

10 responses to “Microwave Peanut Butter Fudge Recipe (Easy)”

  1. It’s absolutely dangerous how easy this peanut butter fudge is to make! I would definitely drizzle some dark chocolate over the top, it’s impossible to beat that chocolate/PB combo!5 stars

  2. Oh my goodness! We made this today and this recipe was so easy, and so delicious! My hubby and daughter absolutely loved this, and devoured so much! I can’t wait to make this again soon!5 stars

  3. Peanut butter is my all-time weakness! I love how lovely this looks for gifting or snacking!5 stars

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