In a large bowel gently whisk together all purpose flour ,sugar and baking powder.
Create well in the middle and add slightly beaten egg and egg yolk and softened butter
Mix gently on a flat surface and make into a soft dough .Do not knead.
Wrap the dough in a cling film and refrigerate in the fridge for 30 minutes
After 30 minutes remove from fridge and knead the dough couple of times to soften it up again on a lightly floured surface
Roll out to 1/ 8 inches thickness .Transfer to an ungreased pie plate .Trim the edges of any extra dough.
Fill the pastry shell with strawberry jam
Bake in preheated oven at 180 degree centigrade for 35 minutes.
Remove strawberry Crostata from oven and let it cool on a wire rack.
Demould from Pie pan and serve.