Make this easy peanut butter fudge in just minutes! Creamy, sweet, and made with four simple ingredients. It' a perfect treat for holidays, gifting, or when you need a quick no-bake treat.

Get your sweet tooth ready for this easy microwave peanut butter fudge recipe! It's perfect for when those cravings hit! Rich, creamy, and melt-in-your-mouth delicious, this one’s a win for chilly harvest evenings, holiday celebrations or sweet treats any time of year.
It's quick, simple, and irresistibly delicious!
Why you'll love this recipe
- Four ingredients: Simple is best!
- No bake fudge - This recipe uses your microwave to make fudge fast and fuss-free; no mess required.
- Perfect for gifting - Share homemade fudge as a hostess gift or tuck it into your sweetie's lunchbox. And yes, it works beautifully during the holidays (but really, fudge is a year-round pleasure in my opinion).
If fudge is your love language, be sure to check out rocky road fudge, too!
Ingredients
You'll only need four simple ingredients to make this peanut butter fudge recipe.

- unsalted butter - this is the traditional pick for fudge, but you can opt for coconut oil as an alternative. It will still have a similar texture and rich flavor.
- peanut butter - pick whatever brand of peanut butter is your favorite. I like the smooth texture of creamy peanut butter but you can use crunchy peanut butter if you want a different texture. If you have extra peanut butter, try making these chocolate peanut butter brownies.
- vanilla extract
- powdered sugar
How to make peanut butter fudge

- In a microwave-safe bowl, combine the butter and peanut butter. Microwave in 30-second intervals, stirring between each, until the mixture is smooth and fully combined.
Add the vanilla extract and stir until incorporated.

- Add the powdered sugar to a large bowl. Pour in the peanut butter mixture.
Stir together until the mixture is smooth and creamy.

- Line an 8×8″ square pan with aluminum foil or parchment paper, leaving a bit of overhang so you can lift the fudge out easily.
Spread the mixture into the prepared pan, smoothing the top with an offset spatula or the back of a spoon. You can use the back of the spoon to create a decorative swirl pattern over the surface.

- Refrigerate for 2 hours or until completely cool and set.
Tip: Use the foil/paper overhang to lift the fudge out of the pan, then cut into squares. I like to start by trimming the edges, and yes — it’s totally allowed (and encouraged) to nibble those edge pieces as a “taste test.”
Save This Recipe For Later!
For the cleanest slices, run your knife under hot water, wipe dry, then cut — repeat between cuts if needed.
Variations
Want to switch things up? Here are a couple of fun ideas:
- Nutty texture: Use crunchy peanut butter or stir in ¼-cup chopped roasted peanuts for added bite.
- Peanut butter + chocolate chips: Stir in ½-1 cup mini chocolate chips to the mixture before pressing it into the pan. Hello, peanut butter cup inspired fudge!
- Swirled chocolate top: Melt a few ounces of chocolate, drizzle over the fudge surface, then use a toothpick or the back of a spoon to marble the fudge before refrigerating.
Storage
Store leftovers in an airtight container at room temperature for up to a week.
If you’d like to keep fudge fresh longer: wrap tightly in plastic wrap (to avoid drying out or absorbing fridge odours) and refrigerate. Before serving refrigerated fudge, allow it to sit at room temperature for 5–10 minutes so it softens just a bit.
Farm Girl Tip
If your fudge seems soft after cutting, pop the tray back into the fridge for 15 minutes to firm up.
More Easy No Bake Treats
If you make this easy microwave peanut butter fudge recipe, leave a recipe comment or review below. I'd love to hear from you!
Recipe

Easy Microwave Peanut Butter Fudge
Send me this recipe!
Ingredients
- 16 Tablespoons unsalted butter (2 sticks)
- 1 cup creamy peanut butter
- 1 teaspoon vanilla extract
- 1 pound powdered sugar
Instructions
- Combine 16 Tablespoons unsalted butterer and 1 cup creamy peanut butter in microwave-safe bowl; microwave in 30-sec intervals, stirring until smooth.Stir in 1 teaspoon vanilla extract.
- In a large bowl, add 1 pound powdered sugar; pour in peanut butter mixture and stir until creamy.
- Line an 8×8″ pan with foil/parchment; spread mixture in, smoothing top. Create swirl if desired.
- Refrigerate for 2 hours or until set. Lift out using the overhang, cut into squares, and serve.
Notes
Nutrition
This Farm Girl Cooks is not a dietician or nutritionist, and any nutritional information shared is an estimate. Calories and other nutritional values vary depending on which brands were used.










Jody says
I love that you reprinted the ingredients that were to be added at the end of each instruction segment, so I don't have to scroll back to see the correct amount.I love peanut butter fudge and I'm excited to try your recipe!
Deanne Frieders says
Hi Jody, this was requested from several readers, so I'm glad it's helpful to you! I'll keep working on updating the posts like this when possible. Enjoy!
Vicki W Eubanks says
does the powdered sugar have to be sifted ?
Deanne Frieders says
No, it doesn't.