Easy Peanut Butter Fudge

5 from 76 votes
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You’re four ingredients away from peanut butter fudge with an extra intense peanut butter flavor! This easy peanut butter fudge recipe comes out smooth and creamy with less than 10 minutes of prep, using the microwave. It’s that easy!

homemade peanut butter fudge cut in pieces

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If you’re a peanut butter lover like me, this easy peanut butter fudge will be your go-to dessert. Plus it keeps well in the fridge for weeks – and freezes for months! Fudge yeah! If you prefer chocolate fudge, you can’t miss my Fantasy Fudge Recipe.

Peanut butter crazed? Try my Peanut Butter Pie or my 5-ingredient Peanut Butter Cookies too.

Why You’ll Love This Easy Peanut Butter Fudge Recipe

  • Extra peanut buttery flavor!
  • Creamy and soft
  • Only 4 ingredients
  • SO easy, 10-minute microwave recipe
  • Beloved by family and friends for YEARS and YEARS!

Ingredients

Easy peanut butter fudge ingredients
  • Smooth peanut butter – regular, smooth peanut butter is the best option for making this fudge! Stay away from natural peanut butter.
  • Confectioner’s sugar – confectioner’s sugar (AKA powdered sugar) is the base for fudge! I use less confectioner’s sugar than most peanut butter fudge recipes. You end up with a rich peanut buttery taste and soft, creamy fudge.
  • Salted butter – I use salted butter so you don’t need to add salt too. You can add in ½ teaspoon salt if you’re using unsalted butter.
  • Vanilla extract – vanilla extract adds flavor.

How to Make Easy Peanut Butter Fudge

Learn how to make easy peanut butter fudge in a few steps. Full instructions in the recipe card; this is just an outline!

  1. Prepare: Grease or line an 8×8” baking dish with parchment paper.
  2. Mix: Melt butter and peanut butter in the microwave. Add vanilla and stir. Add sugar and stir until smooth. If there are lumps, microwave mixture in increments of 15 seconds, stirring vigorously every increment.
  3. Set: Pour into prepared pan. Refrigerate for about 2 ½ hours. Slice.
Refrigerate fudge and then slice.

My Pro Tip

Tips for Making the BEST Easy Peanut Butter Fudge

  • Stay away from natural peanut butter. 
  • If you don’t have a sifter, you can simple add in unsifted sugar and work the lumps out by heating the mixture according to the steps above.
  • If you’d like to make a pretty design on top of your fudge, refrigerate the prepared pan of fudge for a few minutes until it just starts to set. Then use a spatula to make a pretty swirl design, and place your fudge back in the fridge to finish setting!
  • Run a knife under hot water to slice peanut butter fudge with ease.
  • If you like your peanut butter fudge soft, enjoy at room temperature. If you like your peanut butter fudge more dense, enjoy chilled.
peanut butter fudge pieces stacked on each other

FAQs

How do I store peanut butter fudge?

Fudge keeps well at room temperature for about a week, or in the fridge for 2-3 weeks!

Can you freeze it?

Yes absolutely! Freeze the peanut butter fudge in a freezer-safe container for up to 3 months. Thaw in the fridge overnight for best results.

More Peanut Butter Recipes You’ll Love!

If you’ve tried this Easy Peanut Butter Fudge or any other recipe on my website, please let me know in the comments below. I love hearing from you. Please consider leaving a 🌟 star rating while you are here!

homemade peanut butter fudge.
5 from 76 votes

Easy Peanut Butter Fudge

You’re four ingredients away from peanut butter fudge with an extra intense peanut butter flavor! This easy peanut butter fudge comes out smooth and creamy with less than 10 minutes of prep, using the microwave. It's that easy!
Prep: 10 minutes
Refrigeration Time: 2 hours 30 minutes
Total: 2 hours 40 minutes
Servings: 36 small pieces
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Equipment

  • 8×8" baking pan (you can also use a 9×9" pan if needed)

Ingredients 

  • 1 cup smooth peanut butter
  • 2 ½ cups confectioner’s sugar, sifting recommended
  • 1 cup salted butter, (2 sticks)
  • 2 teaspoons vanilla extract

Instructions 

  • Grease or line an 8×8” baking pan with parchment paper (so you can easily lift the fudge out of the pan).
  • Melt butter and peanut butter in the microwave, until butter is just melted. Add vanilla and stir until uniform. Add sugar and stir until smooth. If there are lumps, microwave mixture in increments of 15 seconds, stirring vigorously every increment, until lumps dissolve.
  • Pour and spread evenly in prepared pan. Refrigerate for about 2 ½ hours, until set. Slice.

Video

Notes

  • Stay away from natural peanut butter. Use regular smooth peanut butter.
  • If you’re using unsalted butter, add in ½ teaspoon salt.
  • If you don’t have a sifter, you can simple add in unsifted sugar and work the lumps out by heating the mixture according to the steps above.
  • If you’d like to make a pretty design on top of your fudge, refrigerate the prepared pan of fudge for a few minutes until it just starts to set. Then use a spatula to make a pretty swirl design, and place your fudge back in the fridge to finish setting!
  • Run a knife under hot water to slice fudge with ease.
  • Fudge keeps well at room temperature for about a 1 week, in the fridge for 2-3 weeks, and in the freezer for 3 months.
  • If you like your fudge soft, enjoy at room temperature. If you like your fudge more dense, enjoy chilled.

Nutrition

Serving: 1piece | Calories: 121kcal | Carbohydrates: 10g | Protein: 2g | Fat: 9g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 3g | Trans Fat: 0.2g | Cholesterol: 14mg | Sodium: 71mg | Potassium: 42mg | Fiber: 0.3g | Sugar: 9g | Vitamin A: 158IU | Calcium: 5mg | Iron: 0.1mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Additional Info

Course: Dessert
Cuisine: American, New England
Calories: 121
Keyword: any season, fall, winter
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About Grace Vallo

Hi, Iโ€™m Grace Vallo! Welcome to my kitchen! Here youโ€™ll find kitchen-tested recipes and step-by-step tutorials with videos, giving home cooks the knowledge and confidence to cook and bake the most flavorful recipes for every season. Featured on the Food Network, Food & Wine, Taste of Home and more.

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