preheat oven to 350 degrees

spray a 1/4 sheet pan (or 13x9 pan) with a non stick baking spray

Beat butter and sugar until light and fluffy

add in eggs and mix thoroughly

mix in flour and vanilla until blended and smooth

pour batter into pan and spread smooth

score batter with a knife into 24 squares

cut apple pieces in half and place them in the middle of each square so they can fit into each square nicely

sprinkle with powdered sugar

bake for 30 minutes or until toothpick comes out clean (be careful to not over bake or like any cake they will become dry, add a minute at a time if needed until they are just baked through)

allow the tray of apple squares to cool,

then cut again into the square shapes and dust with powdered sugar and serve