Step 1

Preheat oven to 400 degrees F. Line a baking sheet with parchment paper and set aside.

Step 2

Lightly flour your work surface. Unfold the puff pastry sheets and lay the 2 pieces of pastry side by side with the short side facing you.

Step 3

Brush the sheets with the melted butter.

Step 4

Starting at the top, cut strips that are 2 inches wide by 15 inches long. You should end up with 5 strips from each sheet of puff pastry.

Step 5

Divide the chocolate chips evenly along the strips of pastry. Leave about 1 inch without chips on either end of each strip.

Step 6

Beginning at the skinny end of each strip, roll up the pastry. Continue rolling each strip of the pastry the same way.

Step 7

Place the pastry rolls seam side down about 2 inches apart on the prepared baking sheet.

Step 8

Lightly brush the rolls with the beaten egg.

Step 9

Sprinkle each roll  generous with the sanding sugar.

Step 10

Bake for 25 to 30 minutes. The pastries should be a dark golden brown. If the pastries are getting too brown, cover lightly with a piece of foil for the final few minutes of baking time.

Step 11

Remove the pastries from the oven. Let cool on the baking sheet for 10 to 15 minutes before serving.