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This easy Peanut Butter Fudge is cooked in your microwave with just 4 easy ingredients. Let it chill in the fridge and you have an amazing treat that everyone is going to love!

A stack of Peanut Butter Fudge

I could eat peanut butter by the spoonful! It’s been a favorite of mine since childhood and this peanut butter fudge hits the spot for this peanut butter lover. It tastes amazing and that’s not even the best part, I made the entire thing in the microwave. Yep, melted it all together then let is chill to set. Easy as can be and a recipe that you are sure to love.

Several pieces of Peanut Butter Fudge

This recipe could be one of my all-time favorite desserts. I would have to say it’s about tied with Dutch apple pie. You only need four simple ingredients to make this sweet treat. Peanut butter, butter, vanilla, and powdered sugar. I started by preparing a casserole dish with parchment paper. I made sure to leave some overhang, it makes it so easy to take out when the fudge is done. Now all you need to do is melt peanut butter with the butter and vanilla. I melted mine in my microwave. Just thirty seconds at a time the stirring and back in for another thirty seconds. Keep doing this until you have a fully melted and really smooth peanut butter mix. I slowly added this to a large mixing bowl that I put my powdered sugar in. I slowly mixed it in to make sure everything stayed smooth and didn’t form clumps.

No baking required for this Peanut Butter Fudge!

Once it’s all combined you can press into the casserole dish that you prepared and place it in the fridge. This is the hardest part of the entire recipe, waiting 3 hours to eat it!

And if you like this fudge recipe you have to check out my other favorite likes this Easy Chocolate Fudge and this amazing Chocolate Chip Cookie Dough Fudge.

Stack of Peanut Butter Fudge

Try these other fudge recipes! They’re family-favorites!!

Are you a total peanut butter lover? You’ll adore these recipes!

Easy Peanut Butter Fudge

Peanut Butter Fudge

This easy Peanut Butter Fudge is cooked in your microwave with just 4 easy ingredients. Let is chill in the fridge and you have an amazing treat that everyone is going to love!
Prep Time 5 minutes
Cook Time 3 hours
Total Time 3 hours 5 minutes
Servings 12 pieces


  • 1 cup unsalted butter
  • 1 cup creamy peanut butter 
  • 1 teaspoon vanilla extract 
  • 3 1/2 cups powdered sugar
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  • Prepare a 8x8 casserole dish with parchment paper leaving some to hang over.
  • Place butter, peanut butter, and vanilla into a microwave safe bowl. Microwave for 30 seconds at a time stirring in between until melted and smooth. 
  • Meanwhile place powdered sugar in a large mixing bowl. 
  • When peanut butter mix is ready slowly pour it into your powdered sugar. Whisking and pouring until well combined. Press fudge into your prepared casserole dish.
  • Chill in the fridge for at least 3 hours or until fudge is firm. Cut into piece and serve.


Make sure to leave an overhang of parchment for easy removal and cutting of the fudge.
Keyword microwave fudge, peanut butter fudge


Calories: 401kcalCarbohydrates: 40gProtein: 5gFat: 26gSaturated Fat: 12gPolyunsaturated Fat: 3gMonounsaturated Fat: 9gTrans Fat: 1gCholesterol: 41mgSodium: 95mgPotassium: 127mgFiber: 1gSugar: 37gVitamin A: 473IUCalcium: 15mgIron: 1mg

Nutritional Disclaimer Kristin Maxwell of "Yellow Bliss Road" is not a dietician or nutritionist, and any nutritional information shared is an estimate. For accurate calorie counts and other nutritional values, we recommend running the ingredients through your preferred online nutritional calculator. Calories and other nutritional values can vary depending on which brands were used.

Stack of Peanut Butter Fudge


Jenine blogs at where she strives to create simple recipes that anyone can make and everyone in the family can enjoy. As a mom of three she knows first hand how busy day to day life can be and how precious family time is. She hopes her easy recipes can help you spend less time in the kitchen and more time around the table enjoying food, family, and making fun memories.

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  1. Jean Ecker says:

    Can you double or triple the recipe?I need more than 12 pieces!

    1. Kristin Maxwell says:


  2. Natalie says:

    I love peanut butter and this fudge looks and sounds so delicious and easy I simply have to try it soon!