Pre heat your oven to 350 F. Line an 8×8 pan with parchment paper. Set aside.
Next, in a large mixing bowl, mix together brown sugar and melted butter until combined. Add in your large egg and pure vanilla extract. Mix well.
Add the dry ingredients into your wet, stirring until everything comes together and no lumps remain. Don’t overmix.
Lastly, fold in the chopped apples until incorporated throughout your batter.
Pour the blondie batter into your parchment lined 8×8 inch pan. Batter will be very thick. Use your spatula to smooth out the batter across the entire pan.
Optional: Top batter with cinnamon sugar topping before baking for extra deliciousness.
Bake for about 25-30 minutes or until a toothpick inserted in the center comes out clean. Look for lightly golden brown edges, then remove from the oven. Let blondies cool in the pan, then cut into 9 or 12 squares!
