Apple Brownies with Maple Glaze

Instructions:

1. Preheat your oven to 350°F (175°C) and line an 8x8 inch baking pan with parchment paper, leaving an overhang for easy removal.
2. Place the butter in a saucepan over medium heat. Melt it, then continue cooking, whisking constantly, until the butter foams and small brown specks appear at the bottom. Remove from heat immediately.
3. In a large bowl, beat the browned butter with both brown and white sugars until smooth.
4. Add eggs one at a time, beating well after each addition, then stir in the vanilla extract.
5. In a separate bowl, whisk together the flour, baking powder, cinnamon, and salt.
6. Gradually fold the dry ingredients into the wet mixture until just combined—do not overmix.
7. Gently fold in the finely diced Granny Smith apples and chopped walnuts until evenly distributed.
8. Pour the batter into the prepared pan and bake for 45 minutes, or until a toothpick inserted into the center comes out mostly clean.
9. Whisk together powdered sugar, maple syrup, heavy cream, and the additional vanilla extract until smooth. Drizzle the glaze over the cooled brownies.