Bundles: Preheat oven to 350 degrees F. Unfold puff pastry and cut the sheet into 2 (4 by 4 inch squares). Beat eggs and cream together to create an egg wash. Brush pastry squares with egg wash. Place 2 chocolate Kisses and 1 mini candy bar in the center of each pastry square. Repeat with remaining Kisses and mini bars. Pull corners of the squares up around the chocolate, brushing edges with more egg wash, if necessary, to create a secure bundle. Brush exteriors of bundles with more egg wash. Repeat with remaining bundles.
Place bundles on a sheet pan lined with parchment paper. Bake for about 35 minutes, or until golden brown.
In a sauce pan bring the heavy cream to a boil. Place the chocolate pieces in a bowl and pour hot cream over top. Whisk until smooth.
Puddle ganache onto a plate and place 1 bundle on top. Top with additional ganache, if desired.