Cube the paneer into ¾” x ¾” pieces. Toss them in a bowl with 2 tbsp avocado oil, 1 tsp turmeric powder, ½ tsp cayenne, and ½ tsp sea salt.
Place the paneer into the air fryer with the rack inserted into the bottom.
Cook at 400 F for 5 minutes. Then give the basket a toss and cook for another 5 minutes until golden brown on all sides.
Remove the paneer to a bowl. Add avocado oil, diced onion, minced garlic, and diced serrano chili—Cook at 400 F for 2 minutes. Stir the mixture and cook for another 2 minutes.
Add the garam masala, coriander powder, and ground cumin and cook this mixture at 400 F for 1 minute.
Add the spinach and cook at 400 F for 3 minutes. Season with ¼ tsp sea salt.
Next, add in the heavy cream and another ¼ tsp sea salt. Cook at 370 F for 8 minutes which will allow the mixture to simmer, thicken and brown. Serve immediately.