Preheat your oven to 350 degrees Fahrenheit.

Melt 1 cup of butter in a large pan over low heat.

In a medium-sized bowl, whisk together the flour, baking powder, salt, cinnamon, and nutmeg; set aside.

Brown the melted butter slightly by increasing the heat to low-medium, stirring frequently.

Peel and chop the apples, then sauté in another pan with 1 tablespoon of butter for about 10 minutes. Add 1/4 teaspoon of cinnamon and mix well. Remove from heat.

In a large bowl, combine the browned butter, brown sugar, eggs, and vanilla. Mix with a hand mixer until the mixture resembles caramel.

Fold in the dry ingredients until just combined.

Gently add the sautéed apples to the batter and mix.

Line a 9x13 baking dish with parchment paper and pour in the batter.

Bake for 35-45 minutes, checking for doneness earlier if using a metal pan. The top should be golden brown, and the center firm.

While the blondies bake, create the maple cream cheese frosting by mixing softened cream cheese and butter in a bowl. Once combined, add the powdered sugar and maple syrup, mixing well.

After removing the blondies from the oven, cool them in the pan for 1 hour. Then lift them out using the parchment paper and transfer to a cooling rack, cooling for an additional 1-2 hours.

Once fully cooled, spread the frosting over the blondies, sprinkle with cinnamon, cut into squares, and enjoy!