defrost one sheet of puff pastry dough
3 oz cream cheese
1oz mascarpone cheese
1/6 cup of sugar
1 egg yolk
1/2 teaspoon of vanilla extract
1/2 tablespoon of lemon zest
1 egg beaten with 1 tablespoon of water for the egg wash
recipe continues after the jump
preheat the oven to 400 degrees. line a sheet pan with parchment paper. to make the filling place the cream cheese and sugar in the bowl of an electric mixer fitted with a paddle attachment and cream them together on low speed until smooth. keep the mixer on low and add the egg yolk, mascarpone cheese, vanilla, and lemon zest mixing just until combined.....set aside.
unfold the pastry sheet onto a lightly floured board and roll it slightly with a floured rolling pin until it is about a 10 inch by 10 inch square....don't worry if it isn't perfect. cut the sheet into quarters with a sharp knife.
put a cut square on your sheet pan and place a heaping tablespoon of the cheese mixture into the middle of the square. brush the border of the pastry square with the egg wash and fold the opposite corners to the center, brushing and overlapping the corners of each pastry so they stick together. (repeat for the next three squares) then brush the top surface of each danish with the egg wash.