01 -
Preheat oven to 350°F (175°C). Line a 9x13-inch baking pan with parchment paper, ensuring overhang for easy removal.
02 -
In a large bowl, whisk melted unsalted butter and packed brown sugar until mixture is smooth and well-blended.
03 -
Add eggs one at a time, mixing thoroughly after each addition. Stir in vanilla extract until incorporated.
04 -
In a separate bowl, whisk together all-purpose flour, baking powder, salt, ground cinnamon, and ground nutmeg.
05 -
Gradually fold the dry mixture into the wet ingredients until a uniform batter forms.
06 -
Gently fold diced apples into the batter until evenly distributed.
07 -
Spread batter evenly into the prepared pan. Bake for 30 to 45 minutes, or until a toothpick inserted in the center emerges with a few moist crumbs.
08 -
Allow blondies to cool in the pan on a wire rack before glazing.
09 -
Melt unsalted butter in a small saucepan over medium heat. Stir in maple syrup until combined, then gradually whisk in powdered sugar until smooth and pourable.
10 -
Drizzle the cooled blondies with the maple glaze, slice, and serve.