Peanut Butter Fudge

Quick Summary

Peanut Butter Fudge- you only need 4 ingredients to make this easy peanut butter fudge recipe! The fudge is creamy, rich, and loaded with peanut butter flavor! The perfect easy treat for the holidays or any time!

peanut butter fudge cut into squares on plate with flaky sea salt.

I love making homemade fudge, especially during the holidays. Fudge is the perfect little treat for holiday parties and also makes a great gift for friends and family.

This Easy Peanut Butter Fudge recipe is my FAVORITE fudge because I LOVE peanut butter. You might have noticed…peanut butter cookies, peanut butter blossoms, puppy chow, scotcheroos, etc. There isn’t a peanut butter treat that I don’t like, ha!

But this peanut butter fudge is the ultimate peanut butter treat. It is creamy, smooth, rich, and full of peanut butter flavor. A little piece will cure all of your peanut butter cravings! Ok, you might have to have two pieces because it is SO good:)

I also love this recipe because it is SO easy, you only need 4 ingredients. You don’t need a candy thermometer or any special equipment. It’s a foolproof fudge recipe, it turns out perfect every single time!

Peanut butter lover’s will go crazy for this fudge!

peanut butter fudge ingredients in bowls.

4-Ingredients

  • Peanut Butter– I recommend using a traditional creamy peanut butter like Skippy or Jif.
  • Salted Butter– I use salted butter in this recipe so I don’t have to add salt. If you want to use unsalted butter, add a little bit of salt.
  • Confectioner’s sugar– I sift the sugar so the fudge is nice and smooth. I recommend using confectioner’s sugar (powdered sugar) instead of granulated sugar because it melts right into the fudge and creates a super smooth and sweet fudge. Granulated sugar doesn’t dissolve as well and can make the fudge gritty in texture.
  • Vanilla Extract– use pure vanilla extract for the best vanilla flavor.
  • Flaky sea saltthe salt is optional, but I love adding a little sprinkle at the end! Sweet and salty is my favorite!
melted peanut butter fudge mixture in bowl with confectioner's sugar and spatula.

How to Make Peanut Butter Fudge

  • Line an 8×8-inch pan with parchment paper, leaving an overhang on the sides. Set the pan aside.
  • Place the peanut butter and butter in a large microwavable bowl. Microwave on high for 2 minutes. Stir and microwave for 1 more minute. Stir until mixture is smooth and creamy.
peanut butter fudge mixture in bowl with spatula.
  • Add the confectioner’s sugar, a little at a time, and stir until smooth. Stir in the vanilla extract. The mixture will be thick.
peanut butter fudge pressed in pan with parchment paper.
  • Press the mixture into the prepared pan and spread with a spatula until even and smooth. Sprinkle with flaky sea salt, if using.
  • Transfer the pan to the refrigerator and chill for 4 hours or until fudge is firm.
  • When the fudge is set up, use the parchment paper to lift the fudge out of the pan. Use a sharp knife to cut the fudge into small squares and serve.
peanut butter fudge cut into squares with flaky sea salt on top.

Variations

Plain peanut butter fudge is perfection, but if you want to mix things up, here are a few ideas.

  • Stir in chopped up peanuts for a nutty crunch!
  • Top the fudge with chopped up peanut butter cups. Press them into the top so they stick!
  • Add chopped up Oreos to the fudge. Peanut butter and Oreos are a great combo.
  • Stir in mini marshmallows for a fluffernutter inspired fudge!
  • Drizzle the fudge with melted chocolate.

How to Store and Freeze Fudge

Store in Fridge: Store the fudge in an airtight container in the fridge for up to 2 weeks. You can eat it cold or let it come to room temperature before serving.

How to Freeze: You can also freeze the fudge. Wrap in plastic wrap and place in a freezer bag or freezer container and freeze for up to 2 months. Thaw in refrigerator before serving.

peanut butter fudge squares on parchment paper with flaky sea salt.

FAQ

Can you make peanut butter fudge on the stove top?

Yes! Place the peanut butter and butter in a medium saucepan and melt over medium heat, stirring occasionally. Remove from heat and stir in the confectioner’s sugar and vanilla. Stir until smooth.

Do you have to refrigerate peanut butter fudge?

You can keep the fudge at cool room temperature in an airtight container for a few days, but I recommend storing it in the fridge. It will stay fresher and last longer.

Can you use natural peanut butter?

I recommend using a brand like Skippy or Jif, but if you really want to use natural peanut butter, you can, just make sure you stir it REALLY well so it is nice and creamy. You don’t want to use a dry natural peanut butter or your fudge will be dry.

More Easy Treat Recipes

Easy Peanut Butter Fudge

You only need 4 ingredients to make this easy peanut butter fudge recipe! The fudge is creamy, rich, and loaded with peanut butter flavor! The perfect easy treat for the holidays or any time!
4.61 from 23 votes

Ingredients
  

  • 1 cup peanut butter*
  • 1 cup salted butter cut into tablespoon pieces
  • 3 1/2 cups confectioner’s sugar, sifted
  • 2 teaspoons pure vanilla extract
  • Flaky sea salt, for sprinkling on fudge, optional

Instructions
 

  • Line an 8×8-inch pan with parchment paper, leaving an overhang on the sides. Set the pan aside.
  • Place the peanut butter and butter in a large microwavable bowl. Microwave on high for 2 minutes. Stir and microwave for 1 more minute. Stir until mixture is smooth and creamy.
  • Add the confectioner’s sugar, a little at a time, and stir until smooth. Stir in the vanilla extract. The mixture will be thick.
  • Press the mixture into the prepared pan and spread with a spatula until even and smooth. Sprinkle with flaky sea salt, if using.
  • Transfer the pan to the refrigerator and chill for 4 hours or until fudge is firm. When the fudge is set up, use the parchment paper to lift the fudge out of the pan. Use a sharp knife to cut the fudge into small squares and serve.
  • Store the fudge in an airtight container in the fridge for up to 2 weeks. You can also freeze the fudge. Wrap in plastic wrap and place in a freezer bag or freezer container and freeze for up to 2 months.

Notes

I like to use creamy peanut butter, but crunchy peanut butter will work too. For this recipe, I prefer a brand like Skippy or Jif instead of natural peanut butter. If you want to use natural peanut butter, make sure you stir it REALLY well.
You can also make the peanut butter fudge on the stove top. Place the peanut butter and butter in a medium saucepan and melt over medium heat, stirring occasionally. Remove from heat and stir in the confectioner’s sugar and vanilla. Stir until smooth.

Nutrition

Calories: 134kcal, Carbohydrates: 13g, Protein: 2g, Fat: 9g, Saturated Fat: 4g, Polyunsaturated Fat: 1g, Monounsaturated Fat: 3g, Trans Fat: 0.2g, Cholesterol: 14mg, Sodium: 72mg, Potassium: 42mg, Fiber: 0.3g, Sugar: 12g, Vitamin A: 158IU, Calcium: 5mg, Iron: 0.1mg
Keywords fudge, peanut butter

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Maria

I'm Maria and my husband is Josh. We share a love of cooking, baking, and entertaining. We enjoy creating recipes that are simple, fresh, and family friendly. We love sitting around the table with good food, good conversation, and good friends and family! Our kitchen is always open!
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  1. I have a recipe that calls for PEANUT BUTTER you’d love. 4 ingredients. No baking, cooking or refrigeration. 4 Steps. 4th step is “Pig out!”. All 5 sons loved it. They make it for their family now.

    Danielle Millspaugh

  2. 5 stars
    Wow – this was so good and so easy! I truly appreciated this recipe as a last-minute (plus four hours haha) recipe. Delicious!