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Home » Recipes » Brownies Bars

Peanut Butter Bars

Estefania
Modified: Sep 15, 2025 · Published: Mar 19, 2025 by Estefania · This post may contain affiliate links · 1 Comment

There's something timeless about peanut butter and chocolate together, they just work. These no-bake peanut butter bars bring that classic flavor home in the easiest, most comforting way.

Recipe
Peanut Butter Bars

I didn't grow up eating peanut butter often, but I've learned how comforting peanut butter and chocolate can be. That's why no bake peanut butter bars have become a favorite in my kitchen. This simple no bake dessert recipe creates a treat that's rich, smooth, and irresistible. I love making these easy 4 ingredient peanut butter bars for snacks, weekend treats, or storing in the freezer for later.

The creamy peanut butter base pairs perfectly with the silky chocolate layer, tasting just like classic chocolate peanut butter bars but with even better texture. Whether you prefer chewy peanut butter bars or the nostalgic flavor of old fashioned peanut butter bars, this recipe has it all. Easy to slice, store, and share, these bars are always a hit no matter the occasion, and they're a dessert I return to time and time again.

Peanut Butter Bars
Jump to:
  • ⭐Why You'll Love This Recipe
  • 🧾Peanut Butter Bars Ingredients
  • 👩🏻‍🍳How to Make Peanut Butter Bars
  • 📖Variations
  • 💭Tips for Recipe Success
  • 🥜More Peanut Butter Recipes to Try!
  • 🍰More Dessert Recipes!
  • Recipe
  • Comments

⭐Why You'll Love This Recipe

  • Made with Simple Pantry Ingredients: Everything you need is likely already in your kitchen, making this a hassle-free treat.
  • No Baking Required: Just mix everything, layer it in a pan, and let the fridge do the rest.
  • Ideal for Make-Ahead Treats: These bars are stored beautifully in the fridge or freezer, so you always have a delicious treat ready.

🧾Peanut Butter Bars Ingredients

You'll find the exact measurements in the recipe card, but here's a closer look at a few of the ingredients and why I use them.

  • Peanut Butter and Butter: I always reach for creamy peanut butter because it gives the bars that soft, smooth bite I love. Mixing in unsalted butter keeps the flavor balanced and makes the base melt in your mouth.
  • Powdered Sugar: I like using powdered sugar since it blends right in without leaving any graininess. It also helps the bars set nicely while still staying soft enough to enjoy.
  • Chocolate Topping: I prefer melting a good-quality chocolate bar with a little butter, it makes the topping glossy, rich, and so much easier to slice without cracking.

    👩🏻‍🍳How to Make Peanut Butter Bars

    You can find the complete printable recipe with measurements below, but for now, here's a quick overview of how it goes:

    process 1-4

    1. Prepare the Peanut Butter Base: In a large bowl, mix softened butter and peanut butter until smooth. Gradually add powdered sugar, stirring until combined.

    2. Shape the Base: Line an 8x8-inch (20x20 cm) baking pan with parchment paper. Press the peanut butter mixture evenly into the dish, smoothing it with a spatula or a small roller.

    3. Melt and Spread the Chocolate: Melt the chocolate with butter in a microwave-safe bowl, heating in 30-second intervals and stirring until smooth. Pour over the peanut butter layer and spread evenly.

    4. Chill and Slice: Refrigerate for 1-3 hours until firm. Lift it out using the parchment paper and cut into peanut butter bars or squares.

    Peanut Butter Bars

    📖Variations

    • For a Sweet-Salty Kick: Sprinkle flaky sea salt on top of the chocolate before it sets.
    • Want some Crunch?: Stir in crushed graham crackers or chopped peanuts into the peanut butter layer.

    💭Tips for Recipe Success

    Line with Parchment Paper: Parchment is my go-to here, it makes lifting the bars out so easy, and I love how clean the slices turn out.

    Rest Before Cutting: Just a few minutes at room temperature saves the chocolate from cracking, something I've learned the hard way before.

    Storage: These bars never last long in my kitchen, but when I do have leftovers, the fridge keeps them fresh for a week, and the freezer is perfect for saving a batch.

    🥜More Peanut Butter Recipes to Try!

    If you enjoy cooking with peanut butter, be sure to check out these delicious recipes for inspiration:

    • 3 Ingredients Peanut Butter Balls
    • Peanut Butter Balls
    • Peanut Butter Mousse
    • 3 Ingredients Peanut Butter Cookies
    • Buckeye

    🍰More Dessert Recipes!

    Here are more of my favorite dessert recipes! Try these:

    • 3 Ingredient Oatmeal Cookies No Flour Eggs Sugar Dairy Butter or Oil stacked on a white plate showing chewy oat texture and chocolate chips
      3 Ingredient Oatmeal Cookies (No Flour, Eggs, Sugar, Dairy, Butter or Oil)
    • Slice of moist lemon olive oil cake dusted with powdered sugar on a plate
      Lemon Olive Oil Cake
    • Hot fudge pudding cake in a glass baking dish with a spoon lifting a square, revealing rich chocolate sauce underneath
      Hot Fudge Pudding Cake
    • 3 ingredient peanut butter oatmeal cookies cooling on a wire rack, golden brown and slightly cracked on top
      3-Ingredient Peanut Butter Oatmeal Cookies

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    Recipe

    Peanut Butter Bars

    Peanut Butter Bars

    Enjoy rich and creamy No-Bake Peanut Butter Bars made with just 4 ingredients! This quick recipe comes together effortlessly, giving you the perfect sweet and salty treat in minutes. 
    5 from 1 vote
    Print Rate
    Course: Dessert
    Cuisine: American
    Prep Time: 10 minutes minutes
    Total Time: 10 minutes minutes
    Servings: 16 Bars
    Calories: 366
    Author: Estefania

    Ingredients 

    Peanut Butter Layer: 

    • 375 g Creamy Peanut Butter
    • 120 g Unsalted Butter - Softened
    • 300 g Powdered Sugar

    Chocolate Layer: 

    • 250 g Dark Chocolate Bar
    • 1 tablespoon Butter
    Prevent your screen from going dark

    Instructions

    • In a large bowl, combine the creamy peanut butter and softened unsalted butter. Mix until smooth and creamy. Gradually add powdered sugar. Continue mixing until everything is well combined into a smooth, thick dough-like consistency.
    • Line an 8x8-inch (20x20 cm) baking pan with parchment paper, leaving a little overhang to lift out easily. Press the peanut butter mixture firmly into the pan, smoothing the surface with a spatula or a small roller. Set aside.
    • Break the chocolate bar into pieces and combine with 1 tablespoon of butter in a microwave-safe bowl. Microwave the chocolate in 30-second intervals, stirring after each interval, until fully melted and smooth.
    • Pour the melted chocolate evenly over the peanut butter layer, spreading gently. Refrigerate for at least 1 hour (preferably 2-3 hours) until firm.
    • Once set, remove from the refrigerator and lift the bars out of the pan using the parchment paper overhang. Slice into squares or bars.
    • Enjoy these delicious peanut butter bars chilled or slightly softened at room temperature!

    Notes

    Soften the Butter First: I like to leave the butter out for about 30 minutes so it mixes smoothly with the peanut butter. 
    Pick Chocolate You Love: I always reach for semi-sweet chocolate; it balances the sweetness just right.  
    Melt Slowly: I microwave in short bursts and stir each time to keep the chocolate silky and prevent burning.  
    Cut with Warm Knife: I dip my knife in warm water, wipe it dry, and slice for neat, even bars. 

    Nutrition

    Calories: 366kcal | Carbohydrates: 31g | Protein: 7g | Fat: 25g | Saturated Fat: 10g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 10g | Trans Fat: 0.3g | Cholesterol: 18mg | Sodium: 110mg | Potassium: 246mg | Fiber: 3g | Sugar: 25g | Vitamin A: 215IU | Calcium: 25mg | Iron: 2mg

    Nutritional information is based on third-party calculations and should be considered an estimate only. Actual nutritional content will vary based upon brands used, measuring methods, cooking method, portion sizes, and more.

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      Homemade Protein Bars with Protein Powder
    • Snickers brownies
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    Comments

    1. Sandra says

      March 19, 2025 at 12:58 pm

      5 stars
      These peanut butter bars look amazing! Love how easy they are to make, can’t wait to try them!

      Log in to Reply
    5 from 1 vote

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    Image of Estefania

    Hi, I'm Estefania!

    I love to cook simple & easy recipes that are inspired by my Spanish culture and travel around the world. For simple and easy recipes with an occasional twist, you’re in the right place!

    About Me

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