These Peanut Butter Blondies are the perfect treat for any occasion, from casual family gatherings to festive celebrations. With their soft, chewy texture and rich peanut butter flavor, these blondies are loaded with Reese’s Pieces and chocolate chips, making them a delightful indulgence. Whether you’re a peanut butter lover or just looking for an easy dessert recipe, these blondies will impress everyone who tries them.
Why You’ll Love This Recipe
- Quick and Easy: This recipe is a one-bowl wonder that requires no mixer, making it perfect for beginner bakers.
- Deliciously Decadent: The combination of peanut butter, chocolate chips, and Reese’s Pieces creates a mouthwatering flavor that satisfies any sweet tooth.
- Versatile Treat: Ideal for potlucks, parties, or simply enjoying at home; these blondies fit every occasion.
- Soft and Chewy Texture: Each bite offers a satisfying chewiness that contrasts beautifully with the crunchy candy pieces.
- Customizable: Feel free to mix in your favorite nuts or swap out the candies based on your preference.
Tools and Preparation
Before you begin making your peanut butter blondies, gather your tools. Having everything ready will make the process smoother and more enjoyable.
Essential Tools and Equipment
- 9×13 inch baking pan
- Parchment paper (optional)
- Microwave-safe bowl
- Whisk
- Spatula
Importance of Each Tool
- Baking Pan: A 9×13 inch pan provides the right size for even baking and perfect blondie thickness.
- Microwave-safe Bowl: Convenient for melting butter and peanut butter without making a mess.
- Whisk: Ensures smooth mixing of ingredients, which is essential for achieving the right texture.
Ingredients
Here are all the ingredients you’ll need to create these delicious peanut butter blondies:
For the Blondies
- 2/3 cup unsalted butter (170 grams)
- 3/4 cup peanut butter (about 270 grams)
- 2 cups light brown sugar (420 grams)
- 2 teaspoons vanilla
- 3 large eggs
- 2 cups all-purpose flour (250 grams)
- 1/4 teaspoon salt
- 3/4 cup Reese’s Pieces (about 140 grams)
- 3/4 cup chocolate chips (about 120 grams)
How to Make Peanut Butter Blondies
Step 1: Preheat the Oven
Preheat your oven to 350°F (180°C). This ensures that it reaches the right temperature for baking.
Step 2: Prepare Your Pan
Line a 9×13 inch pan with parchment paper, letting it hang over the sides for easy removal later. Alternatively, lightly grease the pan if you prefer.
Step 3: Melt Butter and Peanut Butter
In a large microwave-safe bowl, melt together the unsalted butter and peanut butter. Heat until almost melted, then stir until smooth to combine.
Step 4: Mix in Sugar and Eggs
Whisk in the light brown sugar until well incorporated. Next, add in the eggs and vanilla extract. Mix until you no longer see bits of egg in the batter.
Step 5: Combine Dry Ingredients
Gently fold in the all-purpose flour and salt into your mixture. Stop mixing when there are no more visible streaks or lumps of flour.
Step 6: Add Candies
Fold in the Reese’s Pieces and chocolate chips evenly throughout the batter to ensure each bite has delicious chunks.
Step 7: Pour into Pan
Spoon or pour your batter into the prepared pan. Use a spatula to smooth out the top so it bakes evenly.
Step 8: Bake
Bake in your preheated oven for about 30 minutes. Check for doneness by inserting a toothpick; it should come out clean or with a few damp crumbs. If you like less gooey bars, bake for an additional five minutes.
Step 9: Cool and Slice
Let the bars cool in the pan before slicing. If you used parchment paper, lift them out easily using the overhang. Cool completely before cutting into squares using a sharp knife for neat edges.
Enjoy your homemade Peanut Butter Blondies, perfect as a sweet treat any time of day!
How to Serve Peanut Butter Blondies
Peanut butter blondies are a delightful treat that can be enjoyed in various ways. Whether you want to enhance their flavor or create a fun dessert experience, these serving suggestions will elevate your blondie game.
Pair with Ice Cream
- Vanilla Ice Cream: The classic choice! A scoop of creamy vanilla ice cream complements the rich peanut butter flavor.
- Chocolate Ice Cream: For chocolate lovers, this pairing adds an extra layer of sweetness and indulgence.
- Salted Caramel Ice Cream: The salty-sweet contrast of caramel ice cream makes for a deliciously decadent dessert.
Drizzle with Sauces
- Chocolate Sauce: A warm drizzle of rich chocolate sauce enhances both presentation and taste.
- Caramel Sauce: Adding caramel sauce introduces a gooey, sweet element that pairs perfectly with peanut butter.
- Peanut Butter Sauce: For true peanut butter fans, drizzling more peanut butter sauce intensifies the flavor experience.
Serve with Fresh Fruits
- Banana Slices: Fresh banana slices add a fruity freshness that balances the richness of the blondies.
- Berries: Strawberries or raspberries provide a tart contrast and add vibrant color to your plate.
How to Perfect Peanut Butter Blondies
Creating the perfect peanut butter blondies is all about attention to detail. Follow these tips for the best results!
- Use Room Temperature Ingredients: This helps create a smooth batter and ensures even mixing.
- Don’t Overmix the Batter: Gently fold in flour until just combined to keep your blondies soft and chewy.
- Check for Doneness Early: Start checking at 25 minutes; remove them when a toothpick comes out with a few moist crumbs for gooey blondies.
- Let Them Cool Completely: Allowing them to cool in the pan provides structure and makes slicing easier without crumbling.

Best Side Dishes for Peanut Butter Blondies
Peanut butter blondies can be paired with various side dishes that complement their sweetness. Here are some great options:
- Fresh Fruit Salad: A mix of seasonal fruits adds brightness and freshness to balance the richness of the blondies.
- Chocolate-Covered Strawberries: These elegant treats enhance the dessert experience while keeping it simple and delicious.
- Vanilla Yogurt Parfait: Layering yogurt with granola and berries creates a refreshing contrast to the dense blondies.
- Milkshake: A thick milkshake, especially peanut butter or chocolate-flavored, makes for a fun pairing that kids love.
- Nutty Granola Bars: These provide texture variation and are perfect for those who love nutty flavors.
- Cheese Platter: A selection of mild cheeses pairs surprisingly well, offering savory notes alongside sweet treats.
Common Mistakes to Avoid
Avoiding common mistakes can help ensure your Peanut Butter Blondies turn out perfectly every time. Here are some pitfalls to watch for:
- Overmixing the Batter: Overmixing can lead to tough blondies. Mix just until you no longer see flour streaks.
- Not Measuring Ingredients Accurately: Using too much or too little of any ingredient can affect texture and flavor. Always measure using a kitchen scale or measuring cups.
- Skipping the Parchment Paper: If you skip lining the pan, your blondies may stick, making it hard to remove them. Line with parchment for easy removal.
- Underbaking or Overbaking: Baking times can vary. Keep an eye on your blondies and check for doneness with a toothpick; it should come out clean or with a few moist crumbs.
- Cooling Too Quickly: Cutting into warm blondies can cause them to crumble. Allow them to cool in the pan for at least 30 minutes before slicing.
Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Place parchment paper between layers to prevent sticking.
Freezing Peanut Butter Blondies
- Wrap individual blondies in plastic wrap and place in a freezer-safe bag.
- They will stay fresh for up to 3 months in the freezer.
Reheating Peanut Butter Blondies
- Oven: Preheat oven to 350F (180C). Place blondies on a baking sheet and heat for about 10 minutes.
- Microwave: Heat one blondie at a time for about 15-20 seconds until warm.
- Stovetop: Use a skillet over low heat, cover, and warm for about 5 minutes, turning occasionally.

Frequently Asked Questions
Can I use crunchy peanut butter for these Peanut Butter Blondies?
Yes, crunchy peanut butter adds extra texture and flavor! Just be aware that it might change the consistency slightly.
How do I know when my Peanut Butter Blondies are done?
Your blondies are done when the top looks set and a toothpick inserted comes out clean or with a few damp crumbs.
Can I customize my Peanut Butter Blondies?
Absolutely! You can add nuts, different candies, or even swap half of the peanut butter with another nut butter for variety.
What if I don’t have Reese’s Pieces?
You can substitute with M&M’s, chocolate chips, or any candy you prefer!
Final Thoughts
These Peanut Butter Blondies are not only soft and chewy but also incredibly versatile. Their rich flavor makes them perfect for any occasion, from casual snacks to special gatherings. Feel free to customize your batch with different mix-ins or toppings! Give this recipe a try; your taste buds will thank you!

Peanut Butter Blondies
- Total Time: 45 minutes
- Yield: About 24 servings 1x
Description
Indulge in the delightful flavors of these Peanut Butter Blondies, a perfect treat for any occasion. These rich, soft, and chewy bars are packed with creamy peanut butter, chocolate chips, and colorful Reese’s Pieces for a sweet twist. Whether you’re hosting a family gathering or simply craving something sweet, this easy one-bowl recipe is sure to impress. With minimal prep time and maximum flavor, these blondies are an irresistible addition to your dessert repertoire.
Ingredients
- 2/3 cup unsalted butter
- 3/4 cup peanut butter
- 2 cups light brown sugar
- 2 teaspoons vanilla extract
- 3 large eggs
- 2 cups all-purpose flour
- 1/4 teaspoon salt
- 3/4 cup Reese's Pieces
- 3/4 cup chocolate chips
Instructions
- Preheat your oven to 350°F (180°C) and prepare a 9×13 inch baking pan with parchment paper or grease lightly.
- In a microwave-safe bowl, melt the unsalted butter and peanut butter together until smooth.
- Whisk in the brown sugar until combined, then add the eggs and vanilla extract, mixing until no egg bits remain.
- Gently fold in the flour and salt until just combined, then incorporate the Reese's Pieces and chocolate chips.
- Pour the batter into the prepared pan and smooth the top.
- Bake for about 30 minutes or until a toothpick comes out clean or with a few damp crumbs.
- Allow to cool before slicing into squares.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 blondie (45g)
- Calories: 196
- Sugar: 14g
- Sodium: 105mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 24g
- Fiber: 1g
- Protein: 3g
- Cholesterol: 41mg
Keywords: For extra texture, try using crunchy peanut butter instead of creamy. Customize with your favorite mix-ins like nuts or different candies. Ensure all ingredients are at room temperature for best results.

