This recipe shows you how to make chocolate pies with a crispy texture, just like the popular Japanese snack "Pie no Mi," using frozen pie crust and a chocolate bar. Roll out the pie crust, sandwich the chocolate bar in between, shape, brush with egg yolk, and bake in a toaster oven or regular oven. With just a few ingredients and simple steps, you can make delicious chocolate pies with a nostalgic taste, perfect for a snack or as a gift.