mix 1 tsp of water with the egg white you saved and apply with a pastry brush to the danish just before baking.
Shred the mozzarella and melt it in the microwave.
Stir in the softened cream cheese until they are well blended.
Mix the flour, stevia, and baking powder together and add the melted cheeses and the egg. Use a fork or a stiff spatula to make a dough.
Divide the dough into 12 equal pieces and roll out between 2 pieces of parchment paper then shape them into 1 inch thick disks and place them on a parchment lined baking tray well separated from each other.
Using the back of a greased table spoon, make a depression in the center of each disk for the filling
To make the filling, beat the egg yolk in a mixing bowl with a fork or whisk and mix in the stevia, erythritol, and lemon extract.
Beat in the softened cream cheese until it the mixture is smooth.
Finally, add the minced strawberries and fold them into the cream cheese mixture.
Fill each depression in the dough disks with the strawberry cream cheese filling and paint the egg wash on the unfilled surfaces of each danish.
Bake the danish at 350 F for 25 minutes or until the dough becomes golden brown.
Serve warm, and refrigerate any leftovers in a covered container.