Preheat oven to 180C/350F (You can use a 22cm or larger, round fluted tart tin with a loose bottom base pan or just a pie dish of your choice).
Cream butter and sugar in your mixer Add oil and egg.
Finish off by adding flour, baking powder, and salt and mix until it all comes together.
Press the mixture in a prepared pie dish, dock with a fork, and blind bake for 10 to 15 minutes, or just until it is slightly browned, remove from oven and let it cool.
Pie Filling
Preheat the oven to 180C/350F, Use your mixer to make the lime filling.
Add the lime zest, lime juice, eggs, and condensed milk and mix on low for a minute or two.
Slowly increase the speed of the mixer as the filling begins to thicken and continue to mix until the filling can hold its shape for a second or two.
Add the filling to the cooled crust and bake for 15-17 minutes, making sure the middle is no longer wobbly then let it cool in the fridge for an hour or two.
Top the cooled pie with kiwi slices just before serving.