Microwave Peanut Butter Cup Fudge

Prep 20 mins
Add'l 1 hr
Total 1 hr 20 mins

Listen up chocolate peanut butter lovers – this melt-in-your-mouth Peanut Butter Cup Fudge is super easy to make in the microwave! Homemade desserts don’t get much simpler than this.

Six Pieces of Microwave Peanut Butter Cup Fudge Set Up Beside Some Twine and Cardboard Tags Labeled "Fudge"

Microwave Peanut Butter Cup Fudge

My parents kept the girls for a night this weekend. Wanna guess what Jorge and I did? Grab drinks at a local bar? Dinner and a movie? Nope, we went and did a little Christmas shopping and a Target run. We were still in bed by 10.

I know you are probably laughing at us, but I have to say that it was REALLY nice to get to walk around Target for an hour without being in a rush because one of the girls is about to scream or poop or both. We also got to have dinner and eat it with both hands. Such a luxury! Ha!

Sunday morning we went to pick up the girls and my brand new iPhone took a nose dive into the driveway. It’s completely shattered and the screen doesn’t work at all. Of course it’s completely out of stock in stores, so now I’m waiting for my replacement to be “express” shipped to me. To dry up my tears while I thank my lucky stars that I bought apple care this time, I made fudge.

Squares of Microwave Peanut Butter Cup Fudge on a Table with a Roll of Red and White Twine

Not just any fudge, but fudge you make in the microwave. I know. I know. Pre-twins me would have probably never made fudge with a microwave. But aren’t you glad that I am now post-twins me? You can make fudge in a microwave!!

About This Recipe

I love December because…well, CANDY! I’ve already made one toffee this year and now I was ready for fudge! I found this recipe from my friend Erin. It is originally Alton Brown’s recipe. The original recipe says to use a pound of powdered sugar. I ended up using 2 1/2 cups of powdered sugar and I couldn’t imagine making it any sweeter.

You could top this fudge with anything…nuts, chocolate, or nothing at all. It stores great and couldn’t be easier to make — perfect for packing up in cute little tins for the neighbors!

Yield: 16

Microwave Peanut Butter Cup Fudge

Squares of Microwave Peanut Butter Cup Fudge on a Table with a Roll of Red and White Twine

Listen up chocolate peanut butter lovers – this melt-in-your-mouth Peanut Butter Cup Fudge is super easy to make in the microwave! Homemade desserts don't get much simpler than this.

Prep Time 20 minutes
Additional Time 1 hour
Total Time 1 hour 20 minutes


  • 1 cup (2 sticks) unsalted butter
  • 1 cup creamy peanut butter
  • 2 teaspoons vanilla extract
  • 2 1/2 cups powdered sugar
  • 8 Reese's Peanut Butter Cups, chopped


  1. Butter and line an 8x8 baking pan with parchment paper. Set aside.
  2. In a large microwave safe bowl, microwave butter and peanut butter for 2 minutes on high. Stir and microwave on high for 2 more minutes.
  3. Add vanilla and powdered sugar to peanut butter mixture and stir until smooth with a wooden spoon or spatula. The peanut butter mixture will start to thicken and loose it's sheen. If it is still really thin, add 1/4 cup more powdered sugar.
  4. Transfer into prepared pan. Sprinkle chopped peanut butter cups on top of the fudge and press in slightly.
  5. Refrigerate until cool (this took about an hour in my fridge). Cut into 1-inch pieces and store in an airtight container for up to a week.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 275Total Fat: 15gSaturated Fat: 4gTrans Fat: 0gUnsaturated Fat: 5gCholesterol: 3mgSodium: 158mgCarbohydrates: 33gFiber: 1gSugar: 28gProtein: 6g


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13 Responses
  1. Jennifer+@+Show+Me+the+Yummy

    Love microwave fudge and PB cups are my favorite, so I’m really loving this recipe! 🙂

  2. K / Pure & Complex

    I love a simple yet wonderful recipe. And this is it. Who wouldn’t want peanut butter cup fudge this holiday season. Loving this

  3. Phi @ The Sweetphi Blog

    I don’t have any kids yet, but I imagine my husband and i will be the same way lol, precious bed time, right? this microwave fudge looks absolutely amazing!

  4. chrysta@noshed

    uuhh yes please! PB cups is my weakness…like I cant control myself around them. This fudge looks absolutely amazing…

  5. Medha @ Whisk & Shout

    PB fudge is my weakness and the peanut butter cups take this to the next level! So much yum.

  6. Angelyn+@+Everyday+Desserts

    these looks ridiculously good!!

    ps: hate hate hate when I drop my phone – mine’s got a quite a few cracks! 🙁

  7. Gayle @ Pumpkin 'N Spice

    Oh my gosh I’m in love with this fudge! Peanut butter fudge is my absolute weakness and I love the addition of pb cups! Plus it’s made in the microwave which is such a time saver! Pinning!

  8. Sarah

    I woke up this morning and saw this in my email and knew what I would do as soon as the kids went off to school. I just pulled it out of the fridge and…YUM! My boys are going to be so excited when they get home! Thanks so much for sharing some EASY recipes. 😉

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I'm a trial & error, self taught, sugar addict who thankfully learned how to survive in the kitchen! I am also a wife, mama of 3.
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