Preheat the oven to 400F/ 200 C
Place all the vegetables in an extra-large bowl. Generously drizzle with oil. Add mustard, Herb de Provence, rosemary, and sugar. Season well with salt & pepper. Massage all the veggies with your hands to coat.
Place the veggies onto 2 or 3 (****) foiled lined baking sheets.
Roast on the middle and top rack of the oven for about 1 to 1 1/2 hours shaking the pan every 30 minutes. Roast until veggies are nicely browned.
Serves 8-10
*****Never overcrowd the veggies. They must only be one layer think otherwise they will stew & not brown and caramelize. You may need to divide them into 3 or 4 batches depending on how much you are making.
Find it online: https://melissamayo.com/recipe/roasted-root-vegetables/