Preheat the oven to 220C, fan-forced. Line a roasting pan with baking paper. Cut the unpeeled sweet potatoes into 4cm chunks. Put in the lined pan, drizzle with 2 tsp vegetable oil, scatter over 1 tsp masala seasoning, season with salt and pepper and toss to coat. Bake for 15 mins.
Step 2 — Prep ingredients
Meanwhile, trim the beans. Thinly slice the onion. Cut the fish into 3cm-thick pieces. Combine the remaining masala seasoning and 1 tbs vegetable oil in a large bowl. Add the beans, onion and fish, season with salt and pepper and toss to coat.
Step 3 — Bake fish and veggies
Put the fish mixture on top of the sweet potato and bake for 10 mins.
Step 4 — Add coconut
Scatter the coconut over the tray bake and bake for a further 4-5 mins or until the fish is cooked through (see Kitchen 101), the veggies are tender and the coconut is golden.
Step 5 — Serve up
Divide the tray bake among plates or pop the pan on the table for everyone to help themselves. Enjoy!
Step 6 — Kitchen 101
Not sure if your fish is cooked through? Simply use a fork or the tip of a knife to take a peek inside the thickest part of the flesh; if it comes apart easily, the fish is cooked.