In a small pan, toast the pecan pieces until fragrant, set aside to cool
Peel, core, and chop apples in to small chunks, about 1/2 inch
In a mixing bowl, cream the butter & sugar, then add egg and mix again til mixture is fluffy.
Add the flour, baking powder, salt and cinnamon. Mix just until combined.
Add the apples and pecans and mix well. The batter will now be sticky and wet from the apples.
Pour and press the batter into a buttered 8x8 baking dish (or lined with parchment). Bake for 30-45 minutes or until golden brown across the crust. Time will be depending on your oven. It took about 35 minutes for me.
Remove from oven and let cool in pan for about 15 minutes before slicing.
Cut into squares and serve. Would be great with ice cream!