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Old Fashioned Peanut Butter Fudge

A close up of a piece of cake on a plate, with Butter and Fudge
This rich, creamy, homemade peanut butter fudge is made on the stovetop for a delicious, old-fashioned treat!
Jump to Recipe
Table of Contents
  1. OLD FASHIONED PEANUT BUTTER FUDGE INGREDIENTS
  2. HOW TO MAKE THIS PEANUT BUTTER FUDGE RECIPE
  3. HOW TO SERVE
  4. STORAGE
  5. FAQ
  6. MORE RECIPES YOU'LL LOVE
  7. JUMP TO RECIPE

This creamy old fashioned peanut butter fudge is a family favorite and vintage recipe. The original recipe was found written on a scrap of paper, tucked in my grandma’s recipe box. Each of the “from scratch” recipes kept inside it is more delicious than the last and this wonderful fudge is no exception.

Looking for more sweets? Make turtles, rocky road fudge, and peanut butter brownies.

stack of peanut butter fudge on a plate

MORE: Mint Chocolate Fudge | Christmas Fudge


OLD FASHIONED PEANUT BUTTER FUDGE INGREDIENTS

LABELLED INGREDIENTS FOR PEANUT BUTTER FUDGE

You will need:

  • 2 cups sugar
  • ½ cup brown sugar, packed
  • 4 tablespoons butter
  • ½ cup milk 
  • 1 cup peanut butter
  • 1 cup mini marshmallows

SUBSTITUTIONS AND ADDITIONS

PEANUT BUTTER: We’d recommend using regular peanut butter in this recipe. Natural peanut butter tends to have oils that can affect the texture of this recipe.

TOPPINGS: Add even more peanut buttery flavor by sprinkling peanut butter chips on top of the fudge before it cools.

HOW TO MAKE THIS PEANUT BUTTER FUDGE RECIPE

STEP ONE: Start by boiling brown sugar and white sugar, butter, and milk in a pot until the mixture reaches 236°F then immediately stop. 

PRO TIP: Make sure you have a good candy thermometer to precisely measure the temperature of the mixture.

boiling ingredients for peanut butter fudge

STEP TWO: Add peanut butter and marshmallows to the sugar mixture and whip until it starts to thicken. 

STEP THREE: Pour into a buttered 8″ x 8″ square pan.

PRO TIP: You could also line the baking dish with parchment paper or aluminum foil to make it even easier to take out if you’d like to.

steps for making peanut butter fudge

STEP FOUR: It takes about one to two hours for the fudge to harden completely. Wait until cooled to room temperature and slice into squares. 

PRO TIP: To help cut the fudge after chilling, score a grid on the top of the fudge when it is barely set but still warm.

HOW TO SERVE

This creamy peanut butter fudge is the perfect treat for a gift-giving, delicious dessert, or holiday treat. Since this fudge is so rich and delicious, you’ll need a refreshing drink to wash it down. Try our iced tea, raspberry iced tea, sweet peach iced tea, or our southern strawberry sweet tea on the side for great choices.

STORAGE

ON THE COUNTER: This old fashioned fudge recipe keeps just fine at room temperature and does not need to be refrigerated. If you like it cold, you certainly can keep it in the fridge though — some people love that texture! Just make sure you always store your batch of fudge in an airtight container so it doesn’t dry out. This sweet treat should stay fresh for one to two weeks. But I don’t think fudge has ever lasted in our house for that long.

IN THE FREEZER: This easy peanut butter fudge recipe freezes well. Store in a covered container or wrapped in plastic wrap and then stored in a freezer bag.

Peanut Butter Fudge

This easy peanut butter fudge is exactly like your grandma used to make! It’s perfect to serve any time of year or to gift during the holiday season. A handful of simple ingredients produces a delicious fudge that will disappear before your eyes!

FAQ

Could I use marshmallow cream instead of mini marshmallows in this easy recipe?

This delicious peanut butter fudge recipe will work fine with either mini marshmallows or marshmallow cream.

What causes fudge not to harden?

In many cases, the sugar, butter, and milk mixture needed to be cooked longer or to a hotter temperature. That’s usually the culprit when fudge doesn’t set. The best way to fix this is to try reheating your fudge mixture by adding a little bit more milk and bringing it slowly back to a boil.

Can this fudge be frozen?

This peanut butter fudge freezes exceptionally well. Store in an airtight container for up to three months. This a great option if you are planning to give this as a homemade gift. Make ahead of time and store until you are ready to share it.

MORE RECIPES YOU’LL LOVE

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A close up of a piece of cake on a plate, with Butter and Fudge

Peanut Butter Fudge

5 from 6 votes
This rich, creamy, homemade peanut butter fudge is made on the stovetop for a delicious, old-fashioned treat!
Prep Time 10 minutes
Total Time 2 hours 10 minutes
Servings 16

Ingredients
  

  • 2 cups sugar
  • 1/2 cup brown sugar packed
  • 4 tablespoons butter
  • 1/2 cup milk
  • 1 cup peanut butter
  • 1 cup mini marshmallows

Instructions
 

  • Start by boiling both sugars, butter, and milk in a pot until it reaches 236°F then immediately stop.
  • Add in peanut butter and marshmallows and whip until it starts to thicken.
  • Pour into a buttered 8x 8-inch pan. You could also line with parchment paper to make it even easier to take out if you’d like to.
  • It takes about one to two hours for the fudge to harden completely. Wait until cooled to room temperature and slice into squares.

Notes

TIP: Make sure you have a good candy thermometer to precisely measure the temperature of the mixture.
TIP: You could also line the baking dish with parchment paper or aluminum foil to make it even easier to take out if you’d like to.
TIP: To help cut the fudge after chilling, score a grid on the top of the fudge when it is barely set but still warm.

Nutrition

Calories: 257kcal | Carbohydrates: 38g | Protein: 4g | Fat: 11g | Saturated Fat: 4g | Cholesterol: 8mg | Sodium: 107mg | Potassium: 124mg | Fiber: 1g | Sugar: 35g | Vitamin A: 100IU | Calcium: 22mg | Iron: 1mg
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Proudly Prepared by the Spaceships Kitchen

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  1. Janie says

    Iโ€™m confused or going crazy. Lol! I saved this recipe and bought the ingredients including marshmallows but now I look back at the recipe and itโ€™s changed and no longer includes marshmallows?

  2. Jenny says

    Can you use natural peanut butter for this recipe? Sometimes it messes up the recipe so I just want to make sure before I give it a whirl. Super stoked to try!

  3. Wendy says

    5 stars
    Just made the peanut butter fudge last night! Came out perfect! I even doubled the recipe! I tried a different chocolate fudge recipe and didnโ€™t work and was so time consuming! This morning I made the same peanut butter fudge recipe using chocolate chips instead of peanut butter!!!! So yummy (I tasted the spoon)! Thank you for the recipe, I will be making this every year!!!!

  4. Sheila Seeman says

    5 stars
    I love peanut butter fudge, can’t wait until I get home from work to make some for our Family Christmas Gettogether tomorrow evening!

    I have a question for you. My Granny used to make a cake call “Scotch Cake”. No, there isn’t any Scotch in it. She told me the word Scotch in this recipe was for the fact that there weren’t that many ingredients in it and it was inexpensive to make. The recipe called for eggs, flour, salt, sugar, cocoa, baking powder, and shortening or butter. I remember there was a secret to the mixing, which was The cocoa, sugar, and buttermilk were put in a pot and boiled until the mixture was starting to boil. While that was cooking, the rest of the ingredients were sifted in to a separate bow and mixed with the egg. When the other ingredients were done, the eggs were stirred into the flour mixture and then the mix was put in an oblong baking dish (shortening and flour put on the baking dish before the cake mix was poured into the baking dish). It took about 25 to 30 minutes to bake at 325degrees. (I used a 13×9 pyrex baking dish) My problem is that I can’t remember how much the ingredients were supposed. I had the recipe in my Granny’s own handwriting and lost it in our housefire in 2007. I have had a request to make this cake but for the life of me I can’t remember how much the ingredients should be. Can you help me?

    • Layne Kangas says

      Hi, Sheila – I hope you enjoy the peanut butter fudge and your Christmas! ๐Ÿ™‚ I haven’t made scotch cake before so unfortunately, I can’t help you with that. I would suggest Googling and taking a peek at the results to see if any see like what your grandmother made. I’m so sorry you lost your Granny’s recipe, that would be heartbreaking. ๐Ÿ™ Merry Christmas!!

  5. serena D richmond says

    5 stars
    it looks so yummy I cant wait to make this . And then try it after wards . Thanks for sharing this recipe

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