1cupdiced appleGranny Smith or Honeycrisp, optional
⅓cupchopped walnutsoptional
Cinnamon-Sugar Topping
1tablespoongranulated sugar
½teaspoonground cinnamon
Instructions
Make the Blondies
Preheat oven to 350°F. Line an 8x8 or 9x9 inch baking pan with parchment paper, leaving an overhang on two sides. Lightly grease the parchment.
In a large bowl, whisk the melted butter with the brown sugar and granulated sugar until smooth. Add the egg, applesauce, and vanilla extract. Whisk until well combined.
Add the flour, baking powder, cinnamon, nutmeg, ginger, and salt on top of the wet mixture. Fold gently with a spatula until just combined. Do not overmix.
Fold in the diced apple and walnuts, if using.
Spread the batter evenly into the prepared pan. Mix the topping sugar and cinnamon together in a small bowl and sprinkle over the batter.
Bake for 25-28 minutes, until the edges are set and slightly golden. The center may look slightly underdone, which is perfect. It will firm up as it cools.
Let cool in the pan for at least 15 minutes before lifting out and cutting into 12 bars.
Notes
Don't overbake: Pull the blondies when the center looks just slightly underdone. A toothpick should come out with moist crumbs, not clean. They continue to set as they cool.
Melted butter is key: Melted butter gives the chewy, fudgy texture. Softened butter produces a cakier result.
Unsweetened applesauce only: Sweetened applesauce will make the blondies too sweet and too wet.
Storage: Keep in an airtight container at room temperature for up to 4 days, or refrigerate for up to 7 days. Freeze for up to 3 months.
Brown butter upgrade: For extra depth, brown the butter in a small saucepan before mixing. Let it cool to room temperature before using. It adds a nutty, toffee-like flavor that pairs perfectly with applesauce.