Place flour, salt and sugar in a food processor and pulse until mixed well.
Add the cold butter and pulse until the butter is in pieces a little smaller than peas.
Add the ice water one tablespoon at a time until the dough sticks together. You may want to open the food processor and test a little piece to make sure it sticks together.
Divide dough into 2 pieces and wrap in plastic wrap.
Chill in the refrigerator for about an hour.
Roll out dough to desired thickness and cut out bunny shapes with a bunny cookie cutter.
Add filling of your choice to half of the bunnies.
Cut a heart shaped nose and 2 eyes for ventilation in the remaining bunnies.
Add a small amount of egg white to the edge of the bunny with the filling.
Place bunny face on top of the one with the filling and pinch sides together with a fork.
Brush the bunny pie with egg white mixture and sprinkle with sugar.
Bake at 350 degree until golden brown about 20-25 minutes.