Some recipes earn their place in the family binder because they are dependable, quick, and made from pantry basics, and this is exactly that kind of bake. With just a handful of everyday ingredients and a few minutes of mixing, you get a rich, sweet treat that feels a little nostalgic, like something tucked onto the counter for after-school snacking or carried to a church potluck in a well-loved glass dish.
These bars are wonderful on their own with a cold glass of milk or a hot cup of coffee, but they also make a cozy dessert when served slightly warm with a scoop of vanilla ice cream. For a little extra contrast, set them out with fresh strawberries or sliced bananas, or pack them into lunchboxes alongside apple slices for an easy homemade sweet.
4-Ingredient Peanut Butter Blondies
Servings: 9 squares
Ingredients
1 cup creamy peanut butter
1 cup packed brown sugar
1 large egg
1/2 cup all-purpose flour
Measured blondie ingredients on a kitchen counter
Measured blondie ingredients on a kitchen counter
Directions
- Preheat your oven to 350°F and lightly grease an 8-inch glass baking dish or line it with parchment for easy lifting.
Prepared glass baking dish on a granite counter
Prepared glass baking dish on a granite counter
2. 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.
Thick peanut butter blondie batter in a mixing bowl
Thick peanut butter blondie batter in a mixing bowl
3. Spread the batter evenly into the prepared baking dish, smoothing the top with a spatula.
Blondie batter spread in a glass baking dish
Blondie batter spread in a glass baking dish
4. 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.
Freshly baked peanut butter blondies cooling in the dish
Freshly baked peanut butter blondies cooling in the dish
5. Let the blondies cool in the pan before slicing into squares and serving.
Plated peanut butter blondie squares with milk
Plated peanut butter blondie squares with milk
Variations & Tips
For extra soft bars: Pull the pan from the oven as soon as the center is set. These continue to firm up as they cool, so a slightly underbaked middle gives you the chewiest texture.
Easy slicing tip: Let the bars cool completely before cutting, and wipe the knife between slices for neater squares. If you want very clean edges, chill the pan for 20 to 30 minutes first.
For picky eaters: If your family likes simple desserts, keep them plain just as written. The peanut butter flavor really shines when there are no extra mix-ins competing with it.
Pantry swap note: Creamy peanut butter works best for the smoothest texture. If you only have natural peanut butter, stir it very well first so the oil is fully incorporated before measuring.
Serving idea: These bars are especially good slightly warm. A few seconds in the microwave makes them taste fresh from the oven and extra cozy after dinner.