Preheat oven to 350F. Grease a 9x13 pan. I like to line it with parchment paper so I can remove the brownies for slicing, but that's optional.
In a large bowl, whisk together the melted butter with the white and brown sugars. Make sure to smooth out any lumps of brown sugar.
Whisk in the eggs, one at a time, then blend in the vanilla extract and cinnamon.
Fold in the chopped apples and nuts.
Whisk in the baking powder, baking soda, and salt. Then fold in the flour and mix just until well combined, but don't over mix.
Spread the batter evenly in your pan. Bake for about 35 minutes, or until golden. If unsure, insert a toothpick somewhere near the center, it should come out without wet batter on it (moist crumbs are fine.) Don't over bake, apple brownies can go from almost done to over-baked in a matter of minutes.
Let the brownies cool somewhat before slicing and devouring :)
Nutritional information is provided as a courtesy and is an estimate only. This information comes from online calculators. Although The View from Great Island attempts to provide accurate nutritional information, these figures are only estimates.
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