Begin by preheating your oven to 350°F.
Next, take each croissant and cut it in half lengthwise, but don’t slice all the way through—leave about ¼ of the croissant still connected at the back. (This creates a pocket for the cookie dough while keeping the croissant intact.)
Now, take one chocolate chip cookie dough ball, break it into small pieces, and scatter the pieces over the bottom half of the croissant.
Next, close the croissant, then break another cookie dough ball into pieces and gently press them onto the top.
Place the stuffed croissants on a large baking sheet, ensuring they have a little space between them.
Place the baking sheet in your preheated oven and bake for 10-12 minutes, or until the croissants are golden brown on top and the cookie dough is fully cooked but still soft and gooey.
Let the croissants cool for a few minutes before serving. The cookie dough will still be warm and melty, and the croissant’s exterior will have the perfect amount of crispiness.