Preheat the oven to 220C, fan-forced. Line a large oven tray with baking paper. Cut the unpeeled sweet potatoes and unpeeled pear into 2cm-thick wedges, removing the pear core. Crush or finely chop the garlic. Halve the sausages lengthwise. Drain and rinse the beans.
Step 2 — Make marinade
Combine the maple syrup, Italian seasoning, garlic, 1 tbs wholegrain mustard and 1 tbs olive oil in a large bowl. Lightly season with salt and pepper.
Step 3 — Flavour sausage mixture
Add the sweet potato, sausage, beans and pear to the marinade and toss to coat.
Step 4 — Bake sausage mixture
Spread the sausage mixture over the lined tray. Bake for 30 mins or until the sweet potato is tender and the sausage is cooked through.
Step 5 — Prep toppings
Meanwhile, season the yoghurt with salt and pepper. Pick the parsley leaves, discarding the stems.
Step 6 — Get ready to serve
Drizzle the yoghurt over the tray bake, then scatter over the parsley leaves. Serve the tray bake at the table.