2canstomato pasteor you can use pureed tomato if using powdered coconut milk
Add butter and vegetable oil to a frypan or wok and heat on medium. Cut chicken into bite sized pieces and chop onion. Stir-fry until onions are translucent.
Add remaining ingredients to slow cooker pot and mix. If you want a hotter product add some hot sauce. The recipe as listed comes out mild – which is the preference of my kids and parents. I add the hot sauce to mine later. Mix in the contents of the fry pan or wok when those have finished cooking – including the liquid.
You can refrigerate overnight or start cooking right away. On the high setting the butter chicken will be ready in 4 to 6 hours, on the low setting that is stretched from 6 to 10 hours. Serve over a bed of rice.