Add the onion, tomatoes, and garlic in the food processor and pulse to chop until a coarse mixture forms.
Heat the Instant Pot to high sauté mode. Add the onion mixture, ground beef, cumin seeds, spice powders, and salt. Sauté on high setting for 2-3 minutes. You will notice that the mixture has started to release water.
Cover and pressure-cook on high for 15 minutes. You do not need to add water.
Allow the pressure to naturally release for 5 minutes, then manually release any remaining pressure. Sauté again on high for 5-7 minutes or until most of the water evaporates.
Add the ingredients listed under ‘After Pressure Cooking’ continue to Sauté on high for another 2-3 minutes. Adjust salt and spices as desired. Cancel the Sauté function and add cilantro leaves and lemon juice.