In a small pot, add water, truvia, lemon juice and xanthan gum.
Wisk ingredients together and cook over a medium heat.
Add strawberries and continue to wisk to prevent burning. Cook until filling thickens to a jam-like consistency.
Set aside to cool while you make the pastry.
Preheat oven to 350 degrees.
In a bowl, combine almond flour, truvia, xanthan gum, baking powder, vanilla and mozzarella cheese. Mix together with a fork.
Microwave for 2 minutes
Stir well with a fork til cheese is well blended.
By now the dough should be cool enough to add egg without cooking it, so add egg and stir quickly to mix egg into dough completely.
Dump dough out onto a silpat or parchment paper. Cover with same and roll out flat to the size of a cookie sheet.
With a pizza cutter, cut dough into 16 even pieces.
Spoon strawberry mixture onto half of the dough squares (the other half will be the tops) keeping the outer edge free of strawberry sauce.
Cover each "bottom" with a "top". Using a fork, flatten the edges to form a seal.
Place pastries on a silpat or parchment paper onto a cookie sheet.
With a sharp knife, cut a slit through the top of each pastry. This should go through the top pastry dough to the strawberry, but not through the bottom layer.
Bake in the oven for roughly 20 minutes until the tops start to brown.
After cooling, refrigerate in an airtight container for 5-7 days.