3-Ingredient Peanut Butter Blondies
These 3-Ingredient Peanut Butter Blondies are rich, chewy, and full of delicious peanut butter flavor. Made with just three simple ingredients, this easy dessert is perfect when you want homemade blondies without a long shopping list or complicated preparation.
With their soft centers, lightly golden edges, and naturally nutty taste, these peanut butter blondies are ideal for afternoon snacks, lunchbox treats, potlucks, or a quick dessert after dinner. No mixer or special baking skills are needed.
Why You’ll Love These Peanut Butter Blondies
- Only three ingredients: A simple recipe made with everyday baking staples.
- Quick preparation: Mix the ingredients in one bowl and transfer the batter to a pan.
- Rich peanut butter flavor: Every bite has a deliciously nutty taste.
- Chewy texture: The blondies become soft and chewy as they cool.
- Easy to customize: Add chocolate chips or chopped peanuts if you don’t mind using extra ingredients.
Ingredients
- 1 cup creamy peanut butter
- ¾ cup packed light brown sugar
- 1 large egg
These three ingredients create a dense, chewy blondie without the need for flour or butter. Choose a conventional creamy peanut butter for the most predictable texture; natural peanut butter that separates may make the batter oily or crumbly.
Instructions
Step 1: Prepare the Oven
Preheat the oven to 350°F (175°C). Line an 8-by-8-inch baking pan with parchment paper, leaving a little overhang to make the blondies easier to remove.
Step 2: Mix the Ingredients
In a medium mixing bowl, combine the peanut butter, brown sugar, and egg.
Stir until the mixture is smooth and evenly blended. The batter will be thick, which helps create the dense texture of the finished blondies.
Step 3: Spread the Batter
Transfer the batter to the prepared baking pan. Use a spatula to spread it evenly into the corners.
Smooth the top so the blondies bake at a consistent thickness.
Step 4: Bake
Bake for approximately 18–24 minutes, checking near the 18-minute mark.
The edges should look set, and the center should no longer appear wet. Avoid overbaking, since the blondies can become dry as they cool.
Step 5: Cool and Slice
Remove the pan from the oven and let the blondies cool completely in the pan. Cooling allows them to firm up and makes slicing easier.
Lift them out using the parchment paper and cut into 9 or 16 squares, depending on your preferred serving size.
Tips for the Best Results
Measure carefully. Too much peanut butter or sugar can change the texture.
Use room-temperature ingredients. A room-temperature egg blends more evenly with the peanut butter.
Don’t overbake. The blondies will continue to set as they cool. Remove them when the center is just set.
Cool completely before cutting. Warm blondies are fragile and may crumble when sliced.
Choose the right peanut butter. Standard creamy peanut butter generally gives more consistent results than natural varieties with separated oil.
Easy Variations
The basic recipe contains three ingredients. These optional additions create different flavors but increase the ingredient count.
- Chocolate Chip Blondies: Fold in ½ cup chocolate chips.
- Peanut Butter Chocolate Blondies: Swirl a little melted chocolate through the batter before baking.
- Crunchy Peanut Butter Blondies: Use crunchy peanut butter for extra texture.
- Peanut Butter and Jelly Blondies: Add small spoonfuls of jam and gently swirl them into the batter.
- Salted Peanut Butter Blondies: Sprinkle a small pinch of flaky salt over the top before baking.
What to Serve with Peanut Butter Blondies
Enjoy these blondies with a glass of cold milk, a cup of coffee, or hot chocolate. For a more indulgent dessert, serve a warm square with vanilla ice cream.
They also make an easy addition to dessert platters, bake sales, and casual family gatherings.
Storage Instructions
Room temperature: Once completely cooled, store the blondies in an airtight container for up to 3 days in a cool environment.
Refrigerator: Store in an airtight container for up to 1 week.
Freezer: Wrap individual squares and freeze in a sealed container for up to 2 months. Thaw at room temperature before serving.
Frequently Asked Questions
Do these blondies really need only three ingredients?
Yes. This version uses peanut butter, brown sugar, and an egg. No flour, butter, or baking powder is needed.
Why are my blondies crumbly?
They may have been overbaked, or the peanut butter may have been too dry. Measure the ingredients carefully and remove the pan when the center is just set.
Can I use natural peanut butter?
You can, but the texture may vary. Stir the natural peanut butter thoroughly before measuring so the oil is evenly incorporated.
How do I know when the blondies are done?
The edges should be set and lightly golden, while the center should look cooked rather than wet. A toothpick may have a few moist crumbs attached, but it should not come out covered in raw batter.
Can I double the recipe?
Yes. Double the ingredients and bake in a 9-by-13-inch pan. Start checking around the original baking time, but expect that the thicker batter or different pan dimensions may change how long it takes to bake.
3-Ingredient Peanut Butter Blondies Recipe Card
Prep Time: 5 minutes
Bake Time: 18–24 minutes
Cooling Time: 30–45 minutes
Yield: 9–16 blondies
Ingredients
- 1 cup creamy peanut butter
- ¾ cup packed light brown sugar
- 1 large egg
Directions
- Preheat the oven to 350°F (175°C). Line an 8-by-8-inch baking pan with parchment paper.
- Mix peanut butter, brown sugar, and egg in a bowl until smooth.
- Spread the batter evenly in the prepared pan.
- Bake for 18–24 minutes, until the edges are set and the center is cooked.
- Cool completely in the pan.
- Lift out, slice into squares, and serve.
Final Thoughts
These 3-Ingredient Peanut Butter Blondies prove that a delicious homemade dessert doesn’t need a complicated ingredient list. Their chewy centers, rich peanut butter flavor, and easy preparation make them a wonderful choice for busy days or last-minute sweet cravings.
Keep this simple recipe handy whenever you want a batch of homemade treats with minimal effort and maximum peanut butter flavor.