This old fashioned peanut butter fudge recipe is light and creamy, and amazingly simple! No one would ever guess that it only requires four ingredients, one pot, and a few minutes of cooking time.

More easy holiday desserts: Biscoff Banana Pudding
Easy peanut butter fudge
Every time I make this peanut butter fudge, I feel like I'd died and gone to a sweet, peanut-buttery heaven where I danced among unicorns and fluffy white clouds.
So I am sharing this super easy peanut butter fudge recipe from a family cookbook.
This fudge recipe is the best because:
- There are only four simple ingredients!
- It's made in only one pot!
- Very easy to make!
- It's so fudgy and delicious!

So if you've always envisioned the peanut butter fudge-making process as being something complex, requiring candy thermometers and special sugars, and perhaps a little bit of fairy dust... let me show you how easy it is to make peanut butter fudge!
Related recipe: Chocolate Peanut Butter Chip Cookies

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Peanut butter fudge with marshmallow fluff
This fudge needs just a container of marshmallow fluff (or marshmallow creme), some good old fashioned creamy peanut butter, milk, and sugar. The secret's out, and I can't wait for y'all to make this yourselves.
Related recipe: Chocolate Peanut Butter No-Bake Dessert

Related recipe: Easy Frozen Banana Bites
Best Peanut Butter for Peanut Butter Fudge:
As much as I love natural peanut butter, you don't want to use it in this recipe. Stick with traditional creamy peanut butter (I almost always use Jif).
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Fudge making tip:
The fudge-making process works best if you put the marshmallow fluff and peanut butter into bowls (as pictured above) before adding them to the milk/sugar mixture. That way you can add them quickly and make sure everything melts together without separation.

More holiday recipes:
- Soft cranberry sugar cookies
- Crescent roll cinnamon rolls
- Make-ahead mashed potatoes
- Cranberry apple crumble
- French toast bread pudding
The Best and Easiest Peanut Butter Fudge Recipe
Ingredients
- 2 cups sugar
- 7 oz marshmallow fluff or marshmallow creme
- 12 oz creamy peanut butter
- ½ cup whole milk
Instructions
- Butter a small pyrex or 8x8 baking dish and set aside.
- In a medium saucepan (preferably non-stick), combine the milk and sugar, and bring to a boil. Continue to boil, stirring constantly, for three minutes.
- Remove the pan from the heat and add the peanut butter and marshmallow fluff. Stir until well combined.
- Spread the fudge into the baking dish. Allow to cool to room temperature, and then refrigerate


Kara
Wednesday 24th of December 2025
made them today and while a very simple recipe I must have messed up somewhere because they are very crumbly. They still taste great and they will be eaten and enjoyed I just wish I knew what I did wrong. I’m thinking I over mixed because when I took the boiling mixture off the stove I had the peanut butter and fluff in a bowl already weighed out but it just wasn’t really melting with the sugar/milk mixture but it was combining. Would maybe slightly warming up the peanut butter and fluff before adding it into the sugar milk mixture help? It is winter where I am maybe they were just colder than they normally would be. I also used lactose free milk, it was still whole milk though so idk if lactose is important or not.
Elizabeth Foley
Wednesday 26th of November 2025
How do I storage this, I don't have to leave it in the fridge do I?
Kate
Thursday 4th of December 2025
Since it is made with milk, I recommend keeping it out no longer than half a day before storing it in the fridge, then taking out a few pieces and letting them come to room temperature before serving, or up to a day. But please consult with the latest food safety recommendations and your healthcare providers because everyone's stomach has different sensitivities.
Sandy
Saturday 11th of October 2025
Just made some....put a little bit of vanilla and 3/4 cup of walnuts.
Deb
Thursday 11th of September 2025
I tried this today. I modified the amount of sugar to 1/3 cup powdered sugar but did everything else as directed and it’s freaking fantastic fudge. I will make again. Thank you.
Paula
Thursday 10th of July 2025
Is it a rolling boil for 3 minutes?
Kate
Monday 12th of January 2026
A gentle boil, make sure to stir constantly so the bottom of the milk doesn't burn onto the pot.