Servings: 9 squares
If you are looking for a quick, easy, and incredibly satisfying dessert that comes together in one bowl, these 4-Ingredient Peanut Butter Blondies are exactly what you need. They are rich, chewy, and packed with peanut butter flavor, with a soft, almost fudgy center and a slightly crackly top. They are the perfect treat for a busy weeknight, a last-minute bake sale, or a cozy weekend snack.
The best part about this recipe is how simple the ingredient list is. With just creamy peanut butter, brown sugar, an egg, and a little flour, you can create a delicious dessert that tastes like it came from a bakery.
Why This Recipe Works
This recipe relies on the natural richness and fat content of creamy peanut butter to create a moist, tender crumb. The packed brown sugar adds a deep, molasses-like sweetness and helps keep the blondies incredibly chewy. The egg acts as the binder, holding everything together, while the small amount of flour provides just enough structure to turn the mixture into a proper blondie without making it dry or cakey.
Ingredients
- 1 cup creamy peanut butter
- 1 cup packed brown sugar
- 1 large egg
- 1/2 cup all-purpose flour
Directions
- Preheat your oven to 350°F and lightly grease an 8-inch glass baking dish or line it with parchment for easy lifting.
- In a medium mixing bowl, stir together the peanut butter and brown sugar until thick and mostly smooth. Add the egg and mix until fully combined, then stir in the flour just until no dry streaks remain.
- Spread the batter evenly into the prepared baking dish, smoothing the top with a spatula.
- Bake for 18 to 22 minutes, or until the top looks set and shiny and the center is just cooked through. Do not overbake if you want a soft, fudgy middle.
- Let the blondies cool in the pan before slicing into squares and serving.
Tips for the Best Results
Use shelf-stable peanut butter. Natural peanut butter that requires stirring often has an inconsistent texture and can make the blondies greasy. Standard creamy peanut butter works best for this recipe.
Pack the brown sugar. When measuring the brown sugar, press it firmly into the measuring cup. Loosely scooped sugar will result in blondies that are less sweet and more crumbly.
Don’t overmix the flour. Stop mixing as soon as the flour is incorporated. Overworking the dough develops gluten, which can make the blondies tough instead of chewy.
Don’t overbake. The blondies are done when the top looks set and shiny and the center is just cooked through. The center will still look a little soft—that’s exactly what you want for a fudgy texture. They will continue to firm up as they cool.
Cool completely before cutting. Warm blondies are fragile and will fall apart when sliced. Wait until the pan is completely cool for clean, neat squares.
Storage and Serving
Store the blondies in an airtight container at room temperature for up to 4 days, or refrigerate them for a firmer, chewier texture that lasts up to a week. They freeze beautifully too—wrap individual bars tightly and freeze for up to 2 months. Serve them on their own as a quick snack or dessert, or crumble them over vanilla ice cream for a delicious sundae.
Simple, chewy, and packed with peanut butter flavor, these 4-Ingredient Peanut Butter Blondies are proof that the best recipes often require just a handful of ingredients.