These Peanut Butter Blondies are a delightful treat that can brighten up any occasion. Their soft, chewy texture and rich peanut butter flavor combined with chunks of Reese’s Pieces and chocolate chips make them irresistible. Perfect for parties, gatherings, or simply a sweet indulgence at home, these blondies are quick to prepare, requiring just one bowl and no mixer. Enjoy the comforting taste of peanut butter in every bite!

Jump to:
- Why You’ll Love This Recipe
- Tools and Preparation
- Essential Tools and Equipment
- Importance of Each Tool
- Ingredients
- For the Blondie Base
- For the Mix-Ins
- How to Make Peanut Butter Blondies
- Step 1: Preheat the Oven
- Step 2: Prepare the Pan
- Step 3: Melt the Butters
- Step 4: Combine Sugars and Eggs
- Step 5: Add Dry Ingredients
- Step 6: Incorporate Mix-Ins
- Step 7: Transfer to Pan
- Step 8: Bake to Perfection
- Step 9: Cool and Slice
- How to Serve Peanut Butter Blondies
- Classic Serving
- À la Mode
- Drizzled with Chocolate
- With Fresh Fruit
- Peanut Butter Spread
- How to Perfect Peanut Butter Blondies
- Best Side Dishes for Peanut Butter Blondies
- Common Mistakes to Avoid
- Storage & Reheating Instructions
- Refrigerator Storage
- Freezing Peanut Butter Blondies
- Reheating Peanut Butter Blondies
- Frequently Asked Questions
- Can I use natural peanut butter for Peanut Butter Blondies?
- How do I know when my Peanut Butter Blondies are done?
- Can I add nuts or other mix-ins?
- What if I don’t have Reese’s Pieces?
- Final Thoughts
- 📖 Recipe Card
Why You’ll Love This Recipe
- Quick and Easy: This recipe only requires one bowl, making cleanup a breeze.
- Delicious Flavor: The combination of peanut butter, Reese’s Pieces, and chocolate creates a mouthwatering treat.
- Versatile Treat: These blondies are great for various occasions like birthdays, potlucks, or casual snacks.
- Gooey Texture: The ideal balance of chewy and gooey ensures every bite is satisfying.
- Customizable: Feel free to add your favorite nuts or swap out the candy for different mix-ins.
Tools and Preparation
Before diving into this easy recipe, gather your tools to ensure a smooth baking experience.
Essential Tools and Equipment
- 9×13 inch baking pan
- Parchment paper or cooking spray
- Microwave-safe bowl
- Whisk
- Spatula or wooden spoon
- Measuring cups and spoons
Importance of Each Tool
- Baking Pan: A 9×13 inch pan provides the perfect size for even baking and easy slicing.
- Parchment Paper: Lining the pan with parchment makes removing the blondies hassle-free.
- Microwave-Safe Bowl: Ideal for melting ingredients quickly without additional cookware.

Ingredients
These peanut butter blondies are soft and chewy with a delicious peanut butter flavor and tons of Reese’s Pieces and chocolate chips. A quick, easy, one-bowl, no mixer recipe.
For the Blondie Base
- 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
For the Mix-Ins
- 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
Begin by preheating your oven to 350F (180C) degrees. This ensures an ideal temperature for baking.
Step 2: Prepare the Pan
Line a 9×13 inch pan with parchment paper, leaving an overhang on the sides. Alternatively, you can lightly grease the pan if you prefer not to use parchment.
Step 3: Melt the Butters
In a large microwave-safe bowl, melt together the unsalted butter and peanut butter. Heat until almost melted, then stir until smooth.
Step 4: Combine Sugars and Eggs
Whisk in the light brown sugar until fully incorporated. Next, add in the eggs and vanilla extract. Continue whisking until there are no visible pieces of egg.
Step 5: Add Dry Ingredients
Gently fold in the all-purpose flour and salt into the mixture. Mix just until no streaks or lumps remain; be careful not to overmix.
Step 6: Incorporate Mix-Ins
Fold in the Reese’s Pieces and chocolate chips until evenly distributed throughout the batter.
Step 7: Transfer to Pan
Spoon or pour the batter into your prepared pan. Use a spatula to spread it smoothly across the top.
Step 8: Bake to Perfection
Place the pan in your preheated oven. Bake for about 30 minutes or until set; a toothpick should come out clean or with a few damp crumbs. If you prefer less gooey blondies, bake for an additional five minutes.
Step 9: Cool and Slice
Allow the bars to cool in the pan. When ready to slice, use parchment overhangs (if applicable) to lift them out onto a cutting board. Slice into squares using a thin knife for clean edges. For extra melty chocolate chips, let them cool for about two and a half hours before slicing.
Enjoy your deliciously chewy Peanut Butter Blondies!
How to Serve Peanut Butter Blondies
These Peanut Butter Blondies are a delightful treat that can be enjoyed in various ways. Whether you want a classic serving or something a bit more creative, there are several ideas to enhance your dessert experience.
Classic Serving
- Serve plain with a light dusting of powdered sugar for an elegant touch.
À la Mode
- Top warm blondies with a scoop of vanilla ice cream for a delicious contrast of temperatures and textures.
Drizzled with Chocolate
- Melt some chocolate and drizzle it over the blondies for an extra layer of sweetness.
With Fresh Fruit
- Pair with sliced strawberries or bananas for a fresh, fruity addition that balances the richness.
Peanut Butter Spread
- Add another layer of peanut butter on top before serving for the ultimate peanut butter experience.
How to Perfect Peanut Butter Blondies
Achieving the perfect Peanut Butter Blondies is simple with a few tips. Follow these suggestions to make your blondies soft, chewy, and packed with flavor.
Use room temperature ingredients: This helps everything mix together smoothly for an even batter.
Don’t overmix: Fold the flour just until combined to keep your blondies from becoming tough.
Check for doneness: Insert a toothpick; it should come out clean or with a few moist crumbs for the best texture.
Let them cool completely: Allowing blondies to cool helps them set up perfectly before cutting.
Store properly: Keep blondies in an airtight container at room temperature to maintain their freshness.
Best Side Dishes for Peanut Butter Blondies
Pairing side dishes with your Peanut Butter Blondies can elevate your dessert experience even further. Here are some great options to consider.
Fresh Fruit Salad: A mix of seasonal fruits adds brightness and balances the sweetness.
Vanilla Ice Cream: Creamy and cool, it complements the warm, chewy blondies beautifully.
Chocolate Sauce: Drizzle this over the top or serve on the side for those who want extra indulgence.
Whipped Cream: Light and fluffy, whipped cream provides a lovely texture contrast.
Caramel Sauce: A rich, sticky sauce that enhances the flavors of peanut butter in the blondies.
Nutella Dip: For chocolate lovers, serving Nutella as a dip will add an irresistible twist.
Common Mistakes to Avoid
Making peanut butter blondies is a fun and rewarding experience, but some common mistakes can ruin your batch. Avoid these pitfalls to ensure delicious results.
- Boldly Overmixing: Overmixing the batter can lead to tough blondies. Mix just until you no longer see flour streaks for a soft, chewy texture.
- Boldly Skipping the Parchment: Not lining your pan with parchment can make it difficult to remove the blondies after baking. Always use parchment for easy lifting and cleanup.
- Boldly Ignoring Oven Temperature: Baking at the wrong temperature can affect cooking times and texture. Always preheat your oven and use an oven thermometer if necessary.
- Boldly Using Old Ingredients: Expired or stale ingredients can impact flavor and texture. Check the freshness of your baking supplies before starting.
- Boldly Not Cooling Properly: Cutting into the blondies too soon may lead to a gooey mess. Allow them to cool completely in the pan before slicing for perfect bars.

Storage & Reheating Instructions
Refrigerator Storage
- Store in an airtight container for up to 5 days.
- Keep in the original baking pan covered with plastic wrap if you prefer.
Freezing Peanut Butter Blondies
- Wrap each blondie individually in plastic wrap and place them in a freezer-safe bag.
- They can be frozen for up to 3 months; just label with the date.
Reheating Peanut Butter Blondies
- Oven: Preheat to 350°F (175°C) and warm for about 10 minutes until soft.
- Microwave: Heat on medium power for 15-20 seconds per blondie for a quick warm-up.
- Stovetop: Place in a skillet over low heat, cover, and warm gently until heated through.
Frequently Asked Questions
Here are some common questions about making peanut butter blondies.
Can I use natural peanut butter for Peanut Butter Blondies?
Yes, natural peanut butter works well! Just ensure it’s well-mixed before measuring for consistent results.
How do I know when my Peanut Butter Blondies are done?
The tops should look set, and a toothpick inserted should come out clean or with a few damp crumbs. Adjust baking time based on your preference for gooeyness.
Can I add nuts or other mix-ins?
Absolutely! Feel free to customize your peanut butter blondies with nuts, dried fruits, or even different types of chocolate chips.
What if I don’t have Reese’s Pieces?
You can substitute with M&M’s, chopped chocolate bars, or any favorite candy pieces that complement peanut butter.
Final Thoughts
These peanut butter blondies are not only delicious but also versatile. You can easily customize them by adding your favorite mix-ins or adjusting sweetness levels. Give this recipe a try; it’s perfect for parties or just as a sweet treat at home!
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📖 Recipe Card
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Peanut Butter Blondies
- Total Time: 45 minutes
- Yield: Approximately 24 servings 1x
Description
Peanut Butter Blondies are an irresistible dessert that combines the rich, creamy flavor of peanut butter with delicious chocolate chips and colorful candy pieces. These blondies are soft and chewy, making them a perfect treat for any occasion, whether it’s a family gathering, a birthday party, or a cozy night in. With just one bowl needed for preparation, these blondies are not only quick to make but also easy to clean up afterward. Indulging in these sweet bars will bring comfort and joy to your taste buds, making them a favorite among both kids and adults alike.
Ingredients
- 2/3 cup unsalted butter
- 3/4 cup peanut butter
- 2 cups light brown sugar
- 2 teaspoons vanilla
- 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). Line a 9×13 inch baking pan with parchment paper or lightly grease it.
- Melt together unsalted butter and peanut butter in a microwave-safe bowl until smooth.
- Whisk in light brown sugar until well combined, then add eggs and vanilla extract.
- Gently fold in all-purpose flour and salt until just combined; avoid overmixing.
- Fold in Reese's Pieces and chocolate chips.
- Pour the batter into the prepared pan and spread evenly.
- Bake for about 30 minutes or until set; adjust time for desired gooeyness.
- Let cool before slicing into squares.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 220
- Sugar: 18g
- Sodium: 150mg
- Fat: 10g
- Saturated Fat: 4g
- Unsaturated Fat: 6g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 1g
- Protein: 4g
- Cholesterol: 40mg





