Preheat the oven to 400° and line a large baking sheet with parchment.
Prep the vegetables and place them all on the prepared sheet pan. Toss them with the oil, rosemary, and maple syrup until well coated. Spread the vegetables in a single layer on the sheet pan (use 2 sheet pans if necessary so you don't overcrowd the vegetables).
Sprinkle evenly with the seasonings and bake in the preheated oven for 25 minutes. After 25 minutes, turn the heat up to a broil and broil another 3-5 minutes or until golden brown. Serve!