Heat oven to 400.
Arrange chicken, onion, and sweet potatoes in 9x13 foil lined baking dish.
Drizzle oil over chicken and vegetables.
Season with salt and pepper and toss to coat.
Drizzle with maple syrup and sprinkle with thyme.
Roast, stirring once, until chicken is cooked through. We baked ours for about an hour.
Once ours was done we mashed the sweet potatoes slightly and drizzled a tiny bit of extra maple syrup on top before tossing it one final time. Then it was ready to serve! Next time, I'm going to have to double it!