Step 2. Using a knife, score the puff pastry about 1 inch from the edge. Brush border with the beaten egg. Prick the center of the dough all over with a fork. Bake for 10 minutes. After removing from oven, use spatula to press down on parts of dough that have puffed up.
* If you buy beet greens with the tops attached, don't throw them out. They are a healthy and delicious green that can be used in place of the kale. Or, give them a quick sauté and add to pasta, stir fry, or serve as a side vegetable.