Place the cubed sweet potatoes on a baking sheet, drizzle with 1 tablespoon of olive oil, and sprinkle with a pinch of salt. Roast for 25-30 minutes or until tender.
While the sweet potatoes are roasting, cook the quinoa. In a saucepan, bring the quinoa and water to a boil. Reduce heat to low, cover, and simmer for about 15 minutes or until the water is absorbed.
In a mixing bowl, combine the cooked quinoa, roasted sweet potatoes, chopped apple, remaining olive oil, and cinnamon. Mix well.