Preheat your oven to 425°F and line two large baking sheets with parchment paper or aluminum foil. This temperature creates the perfect balance for caramelizing exterior edges while keeping centers tender and juicy throughout cooking.
In a large bowl, combine all cut vegetables and drizzle generously with olive oil. Toss until every piece is evenly coated, then sprinkle the garlic powder, thyme, paprika, salt, and pepper over the mixture.
Divide vegetables between the two prepared baking sheets in a single layer, ensuring nothing overlaps too much. Roast for 25 minutes, then shake the pans and rotate them from top to bottom oven rack for even browning.
Return to the oven for 10 more minutes until Brussels sprouts edges are crispy and root vegetables are fork-tender when pierced. While roasting, whisk together the balsamic vinegar and maple syrup in a small bowl for the finishing glaze.
Remove thanksgiving roasted root vegetables family recipe from the oven and drizzle the balsamic-maple mixture over everything while still hot. Toss gently to distribute the glaze evenly, then sprinkle fresh parsley over the top and let rest for 2 minutes before serving.