Add the rinsed lentils, coconut milk, diced tomatoes, vegetable broth, curry powder, garlic powder, ground ginger, and salt to the slow cooker.
Stir the ingredients once to combine everything evenly.
Cover and cook on low for 7 to 8 hours, until the lentils are soft and the sauce has thickened.
Taste and adjust salt if needed before serving.
Spoon the lentils over cooked basmati rice and top with chopped cilantro.