Preheat your oven to 350°F. Line a 9x9 inch baking dish with parchment paper or well greased with non-stick spray or oil
Chop apples into 1/4 pieces, and add 1 tsp of sugar and 1 tsp cinnamon toss until apples are coated and set aside
In the bowl of a stand mixer with the paddle attachment on medium speed, cream together the softened butter and granulated sugar until light and fluffy (about 2-3 mins)
Add the eggs, one at a time, beating well after each addition
Mix in the vanilla extract beat an additional 2 minutes
In a large bowl, whisk together the flour, baking powder, and salt and spices
Gradually add the flour mixture to the wet ingredients until just combined. The batter will be thick.
Fold in the chopped apples
Crumble
In a small bowl add the brown sugar, cinnamon and flour, then add the cubed butter and using your hands or a fork, mix to create a crumble
Pour the batter into the bottom of the pan and spread out evenly
Sprinkle crumble over the top
Bake in the preheated oven on the medium rack for 35-40 minutes, or until edges are golden brown and a toothpick comes out clean in the center of the pan , but the middle should feel a bit underdone in the middle.
Remove from the oven and allow to cool for 30 minutes
Stir the powdered sugar and maple syrup together to create a thick glaze and drizzle over the top of the bars.