Combine all ingredients for the lemon bar base in a mixing bowl and mix until well combined. Press the mixture firmly onto the bottom of a 9-inch springform pan and set aside.
In another mixing bowl, beat cream cheese, sugar and vanilla extract until completely smooth. Add in one egg at a time and mix until smooth. Mix in the espresso powder until well combined.
Pour the filling over the lemon bar base and bake for 1 hour or until the center is set. Turn off the oven and let the cheesecake cool in it until it comes down to room temperature. Cover the cheesecake with a plastic wrap and refrigerate overnight.
The next day, make the topping: In a saucepan, mix cornstarch and sugar. Stir in pineapple juice and cook over medium heat for 1-2 minutes or until the mixture thickens. Stir in drained crushed pineapple and let it cool completely.
Top the cheesecake with the pineapple mixture and sliced kiwi fruits and serve.