Preheat your oven to 375 F.
Rinse the sweet potatoes and cut them into cubes. Toss them together with the 2 tbsp of olive oil, salt, garlic powder and cinnamon. Bake for 45 minutes, flipping halfway through.
Prepare your rice as instructed on package. Once ready, set aside.
While the rice and the sweet potatoes cook, prepare your green tahini sauce by blending all of the sauce ingredients together in a blender until smooth. Add more water by the tablespoon if needed to thin it out.
Once the rice is ready, season it with salt.
Transfer your rice to a large shallow serving dish, and start layering your toppings starting with the arugula, then sweet potatoes, onions, feta cheese, walnuts, and pomegranate seeds.
When ready to serve, drizzle your tahini dressing over the top, and serve the dish cold or at room temperature! I suggest mixing the tahini in only when ready to serve.
Leftovers will stay fresh in the fridge for up to 1 week. Store the rice mixture in an airtight container, and the tahini in a separate container.