Roll out one pie dough on a floured surface. Roll into a rectangle as much as you can. Using a pizza cutter, cut the outsides of the circle to make a rectangle. Repeat with second pie dough.
Cut the dough into 8 even rectangles.Repeat with second pie dough roll so that you have 16 total rectangles.
Place 8 rectangles on a baking sheet(that is covered with parchment paper). Spread 1 to 2 tbsp Nutella in the center of each dough square leaving a border so that you can seal them.
Cover each rectangle with the remaining 8dough rectangles. Seal the edges by crimping all the way around the pastries with the end of a fork.
Using a knife or other pointy kitchen tool (I used the end of a kitchen thermometer) and poke holes in the top of each pastry.
Bake for 20-22 minutes at 350 degrees. Cool on a baking rack.
To Make the Topping: Melt the white and dark chocolate in the microwave in separate bowls. Spoon the white chocolate over each cooled Pop Tart and drizzle with the melted dark chocolate. Top with sprinkles.
Notes
You can use your pie dough scraps to create other shapes. I rolled the remaining scraps of dough out and make some heart Pop Tarts with a heart cookie cutter.