Preheat the oven to 400F
Place all the vegetables on an oven tray and drizzle with the olive oil and syrup. Add the sprigs of rosemary and season well. Cook for about 20 minutes until all the vegetables are tender and browned.
While the vegetables are in the oven, cook the gluten free pasta according to packet instructions.
Remove vegetables from the oven, drizzle the garlic oil over the vegetables and tip everything in a saucepan.
Add the tomato sauce bring to the boil and allow to simmer gently for a minute or two.
Serve on top of the gluten free pasta and garnished with chopped rosemary.