- ½ cup unsalted butter, melted
- 1 cup creamy peanut butter
- 1 cup brown sugar (packed)
- 1 large egg
- 1 tsp vanilla extract
- 1 cup all-purpose flour
- ½ tsp baking powder
- ¼ tsp salt
- ½ cup chocolate chips Optional
- ¼ cup chopped peanuts Optional
- Peanut butter chips Optional
- Sea salt flakes Optional
Step 1: Prepare the Baking PanPreheat your oven to 350°F (175°C).Line an 8×8-inch baking pan with parchment paper or lightly grease it.This makes it easier to lift the blondies out after baking. Step 2: Mix the Wet IngredientsIn a large mixing bowl, whisk together:melted butterpeanut butterbrown sugarMix until smooth and creamy.Add the egg and vanilla extract and continue mixing until fully combined. Step 3: Add the Dry IngredientsStir in:flourbaking powdersaltMix gently until just combined. Do not overmix.If using chocolate chips or peanuts, fold them in at this stage. Step 4: Spread the BatterTransfer the batter into the prepared pan.Use a spatula to spread it evenly across the pan.Optional: sprinkle a few extra chocolate chips or peanuts on top. Step 5: BakeBake for 20–25 minutes.The edges should be golden and the center should look set but still soft.Avoid overbaking to keep the blondies chewy. Step 6: Cool and SliceAllow the blondies to cool in the pan for about 20 minutes.Lift them out using the parchment paper and slice into squares or bars.