Put all ingredients in a large resealable freezer bag.
Remove excess air, seal, and freeze.
Thaw overnight in the fridge.
Cook on low for 6-8 hours in the slow cooker.
Alternatively, you may cook this on the stovetop, simmer, stirring occasionally until sweet potato and lentils are soft.
Serve over Basmati or jasmine rice. Sprinkle with fresh cilantro.