Pre-heat oven to 170°C, or 350°F
Place sweet potatoes and onion on a baking tray, including the nuts, maple syrup, and Cajun seasoning.
The tilapia should have two slits on each side. Each fish should be sprinkled with one teaspoon of Cajun seasoning.
Place the tilapia on top of the sweet potatoes. Bake for 25-30 minutes or until the fish is cooked and the potatoes are tender.
Serving Suggestions: Serve with rice and vegetables of your choice.