Place a heavy rimmed sheet pan in the oven and heat to 425°F.
Trim a thin slice from the stem end for stability. Halve each squash from stem to tip, scoop out seeds, then cut each half into 1-inch wedges.
Toss wedges with olive oil, salt, pepper and thyme, coating both cut sides.
Arrange wedges on a cut side on the hot pan. Roast 18 minutes, turn to the second cut side and roast 12 to 18 minutes more.
Brush the wedges lightly with maple syrup during the final 3 minutes, watching the edges so the sugar does not scorch.
Rest 5 minutes, drizzle with apple cider vinegar and serve when a knife slides easily through the thickest flesh.