You’re 4 ingredients away from creamy, extra peanut buttery fudge! Microwave peanut butter fudge comes out smooth and creamy with less than 10 minutes of prep.
If you’re a peanut butter lover like me, this easy fudge will be your go-to dessert. Plus it keeps well in the fridge for weeks – and freezes for months! Fudge yeah!
Peanut butter crazed? Try my Peanut Butter Oreo Pie or my 5-ingredient Flourless Peanut Butter Cookies too.
Easy Peanut Butter Fudge
This fudge recipe couldn’t be easier or more peanut buttery. I use less sugar than most recipes, which yields a more intense peanut buttery flavor and soft, creamy texture. It’s heavenly!
Why You’ll Love This Peanut Butter Fudge
- Extra peanut buttery flavor!
- Creamy and soft (never gritty)
- Only 4 ingredients
- Fool-proof, 10-minute microwave fudge recipe
- Tons of mix-in and topping ideas
Peanut Butter Fudge Ingredients
- Smooth peanut butter – regular, smooth peanut butter is the best option for making this fudge! Stay away from natural peanut butter.
- Confectioner’s sugar – confectioner’s sugar (AKA powdered sugar) is the base for fudge! I use less confectioner’s sugar than most peanut butter fudge recipes. You end up with a rich peanut buttery taste and soft, creamy fudge.
- Salted butter – I use salted butter so you don’t need to add salt too. You can add in ½ teaspoon salt if you’re using unsalted butter.
- Vanilla extract – vanilla extract adds flavor.
How to Make Peanut Butter Fudge
Full instructions in the recipe card; this is just an outline!
- Prepare.
Grease or line an 8×8” baking dish with parchment paper.
- Make.
Melt butter and peanut butter in the microwave, until butter is just melted. Add vanilla and stir until uniform. Add sugar and stir until smooth. If there are lumps, microwave mixture in increments of 15 seconds, stirring vigorously every increment, until lumps dissolve.
- Set.
Pour into prepared pan. Refrigerate for about 2 ½ hours, until set. Slice.
Add-Ins and Toppings
Use ¾ to 1 cup of the following add-ins or toppings, to take your peanut butter fudge to the next level!
- Chocolate – swirl in melted chocolate chips or ganache before refrigerating.
- Peanut butter cups – crush peanut butter cups and sprinkle them on top of the fudge after refrigerating for 20 minutes.
- Peanuts – mix in peanuts to fudge before refrigerating.
- M&Ms – sprinkle M&Ms on top of the fudge after refrigerating for 20 minutes.
- Peanut butter M&Ms – sprinkle PB M&Ms on top of the fudge after refrigerating for 20 minutes.
- Butterfingers – sprinkle Butterfingers on top of the fudge after refrigerating for 20 minutes.
- Oreos – sprinkle Oreos on top of the fudge after refrigerating for 20 minutes. Or you can mix them in if you don’t mind soft Oreos!
- Jelly – use your favorite jam or jelly, and swirl in before refrigerating.
- Pretzels – sprinkle broken pretzels on top of the fudge after refrigerating for 20 minutes.
- Brownies – sprinkle brownies on top of the fudge after refrigerating for 20 minutes. Or you can mix them in!
- Flourless Peanut Butter Cookies – sprinkle crumbled cookies on top of the fudge after refrigerating for 20 minutes. Or you can mix them in!
More Peanut Butter Recipes You’ll Love!
- Old-Fashioned Peanut Butter Oreo Pie
- Homemade Honey Peanut Butter
- No-Bake Peanut Butter Chocolate Layer Bars
- Dad’s Famous Thai Peanut Sauce
Equipment
- 8×8" baking pan (you can also use a 9×9" pan if needed)
Ingredients
- 1 cup smooth peanut butter
- 2 ½ cups confectioner’s sugar sifting recommended
- 1 cup salted butter (2 sticks)
- 2 teaspoons vanilla extract
Instructions
- Grease or line an 8×8” baking pan with parchment paper (so you can easily lift the fudge out of the pan).
- Melt butter and peanut butter in the microwave, until butter is just melted. Add vanilla and stir until uniform. Add sugar and stir until smooth. If there are lumps, microwave mixture in increments of 15 seconds, stirring vigorously every increment, until lumps dissolve.
- Pour and spread evenly in prepared pan. Refrigerate for about 2 ½ hours, until set. Slice.
Video
Notes
- Stay away from natural peanut butter. Use regular smooth peanut butter.
- See my post above for mix-ins and variations!
- If you’re using unsalted butter, add in ½ teaspoon salt.
- If you don’t have a sifter, you can simple add in unsifted sugar and work the lumps out by heating the mixture according to the steps above.
- If you’d like to make a pretty design on top of your fudge, refrigerate the prepared pan of fudge for a few minutes until it just starts to set. Then use a spatula to make a pretty swirl design, and place your fudge back in the fridge to finish setting!
- Run a knife under hot water to slice fudge with ease.
- Fudge keeps well at room temperature for 1-2 weeks, in the fridge for about 3 weeks, and in the freezer for 3 months.
- If you like your fudge soft, enjoy at room temperature. If you like your fudge more dense, enjoy chilled.
Thank you for this perfectly simple and absolutely delicious recipe! It’s a new household favorite treat that I make frequently instead of buying candy for the candy jar lol Detailed, accurate, wonderful recipe!
Author
Hi Tessa,
Thanks for your comment. I’m so glad you love this recipe as much as I do!
Grace
So delicious. My guy’s new favorite ask! I’ve made it twice in two weeks. 🙂
Author
That’s what I love to hear! Thanks for commenting!
Grace
If I could give it more stars, I would!
This is the best peanut butter fudge I’ve ever had, hands down!!!
Author
Wooohoo! Thanks for commenting!
Grace
I really loved this one. My family now wants me to make fudge all the time.
Author
Awesome to hear!!
Grace
Thank you this peanut butter fudge recipe is the best I’ve ever had
Author
This makes me so happy! Thanks for the comment 🙂
Grace
I finally found out that you have microwave fudge. This an awesome recipe and now I can’t stop making microwave fudge.
Author
SO happy to hear! Thanks for commenting 🙂
Grace