Heat coconut oil in a kadai or a skillet. Add the fennel seeds and let them sizzle. Add the finely chopped ginger, green chillies, and curry leaves, and saute for a minute. Next, add the sliced red onions with a pinch of salt and saute until golden. Reduce the flame to low, add the spice powders, and saute for a few minutes. Next, stir in the ketchup, ground pepper, and salt to taste. Switch off and keep aside to cool.
Stuff the puff pastry
Line a baking tray with baking paper and place the thawed puff pastry squares leaving enough space between each. Divide the onion mixture and place it in the centre of each pastry square. Place the halved eggs cut side down diagonally (align with the corners of the square). Bring the opposite corners of the pastry together and seal by pressing lightly. Lightly stretch the four corners to shape like a petal (watch video).
Prepare to bake
Preheat the oven to 200℃ with the rack on level 3 or 4 or the top half. Prepare an egg wash by whisking an egg (or an egg yolk with a splash of milk) and brushing all over the sealed puffs. Place the baking tray in the preheated oven and bake for 20 to 25 minutes. If you find the puffs are pale, you may remove halfway and quickly brush the puff pastries again with egg wash and bake for the remaining time or until the egg puffs turn crispy and golden.
Serve egg puffs
Remove from oven and let it cool for 5 to 10 minutes. Serve the Kerala-style spicy masala egg puffs with chai and some ketchup.
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