For a spicier version, add cayenne pepper to the marinade and a diced serano chile to the onion mixture. Adding cayenne to the finished palak paneer is also moderately successful. 

master

Palak Paneer

turmeric

salt

canola oil

paneer

spinach

medium white onion

fresh ginger

garlic cloves

garam masala

ground coriander

ground cumin

plain yogurt

rice

Whisk the turmeric, salt, and canola oil together. Add the paneer cubes, toss, and marinate while prepping other ingredients.

In a large skillet, brown the paneer cubes on all sides over medium heat and remove from pan.

Add the onion, ginger, and garlic to the pan and saute until toffee colored. This will take a solid 30 minutes, maybe more.

Add the garam masala, ground coriander, and ground cumin and cook for another 3-5 minutes.

Incorporate the spinach and season with salt. Cook for 10 minutes, adding water as needed.

Reduce heat to low. Slowly stir in yogurt. Mix in browned paneer and cover to warm, about 5 minutes.