Preheat the oven to 375 degrees. Line a baking sheet with parchment.
Remove Puff Pastry Sheets from the freezer and allow to come to room temperature. In a mixer fitted with a paddle attachment, combine butter and sugars until light and fluffy.
Add vanilla extract.
Add flour and salt. Mix until combined.
Stir in mini chocolate chips and sprinkles.
Divide the dough into 6 equal parts and place in the freezer for at least 20 minutes.
On a lightly floured surface, unfold one Pastry Sheet. Using a knife or bench scraper, cut the sheet into thirds, and then each third in half. (You will get 6 rectangles) Transfer rectangles to baking sheet. Place cookie dough in the middle of three rectangles. Top them off with another rectangle sheet.
Using a fork, crimp the edges making sure each side is sealed.
Repeat with remaining pastry sheet.
Bake for 15 - 18 minutes.