Peanut Butter Microwave Fudge

There are recipes you stumble on once and never forget, and this peanut butter fudge is one of those treasures. My grandma used to keep a little tin of fudge on the counter around the holidays, but I’ll be honest — I make this year-round because it’s so easy and quick. The best part? It takes less than 15 minutes from start to finish and only a handful of pantry staples. No candy thermometer, no endless stirring, just pure peanut buttery bliss.

If you need a last-minute sweet for a party, gift box, or just a treat for your family, this microwave fudge recipe will become your go-to.

Why You’ll Love This Recipe

Quick & fuss-free – done in under 15 minutes.
Minimal ingredients – just 4 basics you probably already have.
Microwave magic – no stove, no candy thermometer.
Rich & creamy – perfectly smooth peanut butter flavor.
Customizable – add chocolate chips, sea salt, or a swirl of Nutella for fun.

Ingredients

1 cup sugar
2 tablespoons butter
1/3 cup milk
1 cup peanut butter (creamy or crunchy, your choice!)

Instructions

Mix base: In a large, microwave-safe bowl, combine sugar, butter, and milk.
Microwave: Heat on high for 3 minutes. Carefully remove (the bowl will be hot!).
Blend: Beat with a hand mixer until smooth and fully blended.
Heat again: Return to the microwave for 31 seconds.
Add peanut butter: Stir in peanut butter until silky and combined.
Set: Spread mixture into an 8×8 pan lined with foil. Smooth the top.
Cool & cut: Let cool completely at room temp, then slice into squares and enjoy!

Tips & Tricks

For extra creamy fudge, use a good brand of creamy peanut butter like Jif or Skippy.
If you like a bit of crunch, swap in chunky peanut butter.
Add a sprinkle of sea salt, chocolate drizzle, or crushed peanuts on top for a finishing touch.
Store in an airtight container at room temperature for up to 5 days, or refrigerate for firmer fudge.
This fudge also freezes well — wrap pieces individually and store in a freezer bag for up to 3 months.

FAQs

1. Can I use natural peanut butter?
I don’t recommend it — the oil separation in natural peanut butter makes the fudge grainy. Stick to regular creamy or crunchy for the best results.

2. How do I know when the fudge is set?
It should feel firm to the touch and pull away easily from the foil lining when ready.

3. Can I double this recipe?
Yes! Just use a larger dish (like 9×13) and add an extra 30–60 seconds to the microwave times.