Preheat the oven to 350°F and prepare an 8x8 baking dish with cooking spray. Set aside.

In a large bowl with an electric mixer or in the bowl of stand mixer fitted with a paddle attachment, cream together the butter and sugar until light and fluffy.

Add the egg and vanilla, blending until combined.

In a separate bowl, sift or whisk together the flour, cocoa powder, baking soda, salt, cinnamon and nutmeg.

Slowly add the dry ingredients to the wet ingredients.

Stir in the applesauce.

Spread the brownie batter into the prepared dish. Set aside.

In a small bowl, combine the chocolate chips, walnuts and sugar. Sprinkle evenly over the brownie batter.

Bake for 23-25 minutes or until it passes the toothpick test.

Remove to a wire rack to cool and then cut into squares.