1. Rub your slow cooker lightly with 1 tablespoon butter or margarine.
2. Pour in rice, 2 cups of water and salt.
3. Cover and cook on High 1 1/2 to 2 1/2 hours, stirring occasionally.
4. Meanwhile, in a blender, combine cilantro, lime juice, oil, garlic, and 2 tablespoons water; blend until smooth. Stir into cooked rice, and fluff with a fork.