Rinse all lentils until water runs clear. Soak 30 minutes (or up to 2 hours). Drain.
Instant Pot Sauté (Normal). Add 1 tbsp ghee and onion; cook 3 to 4 minutes until soft.
Add ginger, garlic, and green chili. Cook 1 minute. Add tomato, turmeric, red chili powder, coriander powder, and salt. Cook 2 to 3 minutes until tomato softens.
Pressure-cook dal
Add soaked lentils and 3 cups water. Cancel Sauté.
Pressure Cook on High 12 minutes. Natural release 10 minutes, then quick-release remaining steam.
Dal should be soft and pourable. Stir in garam masala and lemon juice. Adjust thickness on Sauté if needed.
Tadka (tempering)
Heat remaining 1 tbsp ghee in a small pan. Sizzle cumin seeds 30 seconds. Add hing and optional chili powder. Pour over dal. Garnish with cilantro. Keep warm.
Make baati dough
Mix atta, semolina, salt, baking powder and ajwain. Rub in 1/2 cup melted ghee until crumbly.
Add warm milk. Knead 4 to 5 minutes into a firm dough. Rest covered 15 minutes.
Shape and air-fry baati
Preheat air fryer to 375°F (190°C).
Divide into 10-12 balls. Press a thumb indent and prick twice with a fork.
Air fry 20 minutes, brush ghee, flip, air fry 8 to 10 minutes more until deep golden. Brush ghee again and keep warm.
Make churma
Dry-roast 1 cup atta over low-medium heat until nutty and golden, 8 to 10 minutes.
Cool slightly. Rub in ghee, then mix jaggery, cardamom, and optional nuts until crumbly like moist sand.
Assemble and serve
Crush one or two hot baati in a shallow bowl. Pour hot dal over. Drizzle 1 to 2 tbsp warm ghee per serving.
Serve churma on the side with raita or salad.
Notes
Soak lentils at least 30 minutes for creamier dal; without soak, pressure cook 15 minutes instead of 12.Baati dough should be stiffer than chapati dough; indent and fork pricks help centers cook through in the air fryer.Dal keeps 3 days refrigerated; reheat with a fresh tadka. Baati are best fresh; re-crisp in the air fryer 3 to 4 minutes.No air fryer? Bake at 400°F (200°C) 18 to 22 minutes with the same indent, flip, and ghee brush once.