Preheat oven to 425� Fahrenheit. �Line a baking sheet with parchment paper if desired.

Combine lentils and one teaspoon curry powder with water in a large, tall pot not a soup pot. �Cover and bring to a boil for three minutes. �Reduce heat to low and cook for ten more minutes, until the water is evaporated. �Stir in spinach, cover and cook until just wilted, about four minutes. �Season with salt. �Uncover and let stand on the stove for a few minutes, stirring occasionally.

Meanwhile, combine sweet potato, shallots, garlic, olive oil, remaining tablespoon of curry powder, cinnamon, and cayenne. �Spread on the baking sheet and cook on middle rack until sweet potatoes are fork tender, about 20 minutes, stirring once half way through. �While sweet potatoes are cooking, spread pumpkin seeds out on a small baking pan and add it to the oven, cooking until the seeds puff up, about four minutes.

Combine lentils, sweet potato, and pumpkin seeds in a large serving bowl, toss with lime juice and cilantro. �Sprinkle with pomegranate arils. �Serve warm with yogurt on the side, if desired.