- Preheat oven to 350 degrees F and grease a half sheet. 
- In the bowl of a stand mixer fitted with the paddle attachment, combine flour, baking powder, eggs, sugar, and soft butter. Mix until a crumbly dough forms.  
- Empty dough out onto a clingfilm-covered workspace and press into a ball. Roll out between cling film. Transfer to baking sheet press into edges. 
- In the same bowl, mix together greek yogurt, sugar, eggs, oil, vanilla pudding, corn starch, and milk until smooth. Pour over crust and smooth out. 
- Evenly distribute mandarin oranges over the mixture. 
- Bake for 45-55 minutes until edges are lightly browned. Let cool before slicing and serving!