heat oil in a sauté pan on medium, add onion, sauté for 2 minutes to soften
stir in ginger, garlic, salt, and curry powder *Indian Dal blend if using and transfer mixture to the slow cooker
stir in the lentils, tomatoes, coconut milk, & water
cover and cook on LOW for 7-8 hrs or HIGH for 3 hrs
stir in chopped spinach & cilantro, if using
serve with warm flatbreads, or naan bread on the side