Prep: Preheat the oven to 375°F. Grease a 9x13 baking dish or line it with parchment paper.
Crust: Combine the flour & powdered sugar in a mixing bowl. Cut in the butter until mixture is uniformly crumbly. Press into the prepared pan. Bake for 18-20 minutes, until golden brown. Set on a wire rack to cool.
Citrus glaze: While crust is baking, make the citrus glaze so that it has sufficient time to cool. Combine the sugar and cornstarch in a small saucepan. Pour in both juices and whisk while bringing to a boil over medium heat. Continue cooking for 4-5 minutes until slightly thickened. Cool completely.
Cheesecake filling: In another mixing bowl, using an electric mixer, beat the cream cheese, sugar, vanilla extract, and lemon juice until smooth. Spread the mixture over the cooled crust. Cover & refrigerate for 1 hour.
Assemble: Cut cheesecake into 24 squares. Top each square with a slice of kiwi, then add a slice of strawberry, 1-2 blueberries & 1 raspberry per square. Brush berries lightly with glaze. Refrigerate until set & ready to serve. Enjoy!
Notes
Leftover cheesecake squares should be stored in an airtight container, in the refrigerator, and they will last up to 5 days.