Mix the flour, sugar, ground cinnamon and chilled butter until crumbly. You may do this by hand using a pastry cutter or simply pulse a few times in a food processor.
With an electric mixer, beat the sugar with the butter until light and fluffy. Add the eggs and vanilla extract and mix until well blended. Add the flour.
Fold in the diced apples and any remaining juice into the batter ensuring the apples are well distributed. Spoon the batter into the prepared pan. Use a spatula to even the surface.