Preheat the oven to 180C degrees.
Cut the squash into cubes, the onion into thin wedges, the pepper into chunks. Thinly slice the garlic. Scatter all these into a large baking tray, the arrange the chipolatas & tomatoes between them.
Scatter the chilli flakes (if used), and the rosemary & thyme leaves on top, season with salt & pepper, then drizzle with some olive oil & maple syrup (if used).
Put the tray in the oven and bake for about 30 minutes, turning the sausages and veggies a couple times.
Serve warm with a crispy salad on the side.