Heat oil in a wide pan and add onions, green chilies, curry leaves chilies and salt. Saute on a medium heat for until golden and evenly caramelized.
Stir in the ginger garlic and cook for a minute until aromatic.
Reduce the heat and stir in chili powder, garam masala, fennel & black pepper. Deglaze with water & cook for a minute. Turn off and cool down completely.
Meanwhile thaw your puff pastry sheets at room temperature, until easy enough to handles. Mine takes only 6 to 7 mins. (May be different depending on the temp)
Making Egg Puffs
Cut each sheet to 4 portions.
Place 1½ to 2 tbsps. of onion masala in the center of each cut puff pastry. Place a halved egg, (yolk facing the onions) on each pastry. If your pastry is too dry, you can brush the corners with little water.
Bring one of the corners over the egg & place it there. Bring the diagonally opposite corner over it & stick. Repeat with the other 2 corners, leaving a little gap for the steam to escape.
Brush with beaten egg and place in the refrigerator for 15 to 20 mins. Meanwhile preheat the oven to 390 F/ 200 C for 15 to 20 mins.
Place in the center and bake for 18 to 20 mins or as instructed on the package, until golden, crisp & flaky. (Smaller ovens and toasters will take much lesser time, around 15 mins)
Cool the tray on a wired rack for at least 5 mins. Serve Egg Puffs with ketchup & chai.