01 - Preheat the oven to 430°F. Line a large baking tray with parchment paper or a silicone mat.
02 - Place the potato chunks in a large saucepan. Cover with cold, salted water, bring to a boil, and simmer for 7–8 minutes until just tender but not falling apart. Drain well and let steam dry for 2 minutes.
03 - Return drained potatoes to the pan. Add olive oil, melted butter, crushed garlic, chopped sage, salt, and pepper. Toss gently to coat the potatoes evenly.
04 - Arrange the potatoes in a wreath shape on the prepared baking tray, leaving a hole in the center. Press together gently to maintain the ring shape.
05 - Roast for 35 minutes, turning the potatoes halfway through for even browning.
06 - After 35 minutes, gently press the potatoes together again if needed. Brush the wreath with the remaining olive oil and scatter the whole sage leaves on top.
07 - Roast for an additional 15–20 minutes until the potatoes are crisp, golden, and fragrant.
08 - Carefully transfer the wreath to a serving platter and serve hot.