1teaspoonxanthan gum,optional, but helps the dough structure
1teaspoonbaking powder
3/4cupbuttervery cold or frozen
2largeeggsbeaten
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Instructions
Combine the flours, sugar, salt, xanthan gum, and baking powder in a bowl or food processor until well mixed.
Cut in butter with a pastry knife or in the processor until blended and butter pieces are small (smaller than peas).
Mix in beaten eggs until a smooth ball forms. If the room is warm or the dough is too soft, refrigerate for 30 minutes to an hour until firm. Sprinkle a little of the rice or tapioca flour out on a sheet of parchment paper and on a rolling pin. Roll dough out to the desired shape. Fold in half and place in the pan.
Gently press the dough into the pan and bake according to recipe directions.