1 Preheat oven to 425F (220C).2 In a large bowl, mix together canola oil, maple syrup, peppers, cauliflower, sweet potatoes, squash, parsnips, carrots, garlic, red onion, salt, pepper and basil.3 Place mixture on a baking pan lined with parchment paper.4 Bake for 40-45 minutes, stirring occasionally until vegetables are tender.