These 3-Ingredient Peanut Butter Blondies are rich, chewy, and packed with peanut butter flavor. Made with just three ingredients and one bowl, they are an easy flourless dessert for quick treats, bake sales, or whenever you want something sweet without a complicated recipe.

 

Ingredients

• 1 cup creamy peanut butter
• 1 cup packed light brown sugar
• 1 large egg

 

How to Make It

1. Preheat the oven to 350°F (175°C). Line an 8×8-inch baking pan with parchment paper or lightly grease it.
2. Add the peanut butter, brown sugar, and egg to a mixing bowl. Stir until smooth and evenly combined.
3. Spread the batter evenly into the prepared pan and smooth the top.
4. Bake for 20–25 minutes, until the edges are lightly golden and the center looks set.
5. Let the blondies cool completely in the pan before lifting and cutting into 9 squares.

 

Helpful Tips

• Start checking around the 20-minute mark to avoid overbaking.
• The center may still look slightly soft when you remove the pan. It will continue to firm up as it cools.
• Creamy conventional peanut butter gives the most consistent texture.
• If using natural peanut butter, stir it very well before measuring.
• For extra crunch, use crunchy peanut butter instead.

 

Easy Variations

• Replace light brown sugar with dark brown sugar for a deeper caramel flavor.
• Add chocolate chips or chopped chocolate for a peanut butter-chocolate version.
• Sprinkle a little flaky sea salt over the top before serving.
• Check ingredient labels if you need the recipe to be gluten-free.

 

Storage

• Store cooled blondies in an airtight container at room temperature for about 3 days. For longer storage, refrigerate for up to 5 days.
• You can also wrap individual pieces and freeze them for up to 2 months. Thaw before serving.

 

FAQs

1. Why are my blondies crumbly?
   Overbaking or cutting them before they have cooled completely can make them crumbly. Let them cool fully before slicing.
2. How do I know when they are done?
   The edges should be lightly golden and the center should look set rather than wet. Avoid waiting until the entire surface looks dry.
3. Can I double the recipe?
   Yes. Use a larger pan while keeping the batter at a similar thickness, and begin checking for doneness based on appearance.
4. Can I use crunchy peanut butter?
   Yes. It adds small pieces of peanuts and extra texture.

 

Final Thoughts

With just three ingredients and one bowl, these peanut butter blondies are an easy homemade treat with a soft, chewy center and lightly golden edges. They are simple enough for everyday baking and easy to customize with chocolate or nuts.