01 - Preheat oven to 425°F. Line a baking sheet with parchment paper and set aside.
02 - Bring a large pot of salted water to a rolling boil. Add the peeled carrots and cook for 10–12 minutes until fork-tender but not mushy. Drain well and let cool slightly.
03 - Arrange the blanched carrots on the prepared baking sheet. Using the bottom of a sturdy glass or jar, gently press each carrot down to about ½-inch thickness.
04 - Drizzle the smashed carrots evenly with olive oil. Sprinkle with kosher salt, black pepper, garlic powder, and smoked paprika if using. Toss gently to ensure even coating.
05 - Roast in the oven for 20–25 minutes, flipping the carrots halfway through, until the edges are golden brown and caramelized.
06 - Transfer the roasted carrots to a serving platter. Finish with chopped fresh parsley and a dusting of grated Parmesan if desired. Serve warm.