Step 2: Coat with butter
Add the potatoes and onions to the pan. Pour the melted butter over them and sprinkle with salt. Toss until everything is evenly coated.
Step 3: Roast undisturbed
Spread the mixture in a single layer and bake for 25 minutes without stirring.
Tip: Letting them sit untouched helps the bottoms crisp up against the hot pan.
Step 4: Stir and continue roasting
Remove the pan, toss everything (scraping up any browned bits), and return to the oven. Roast for another 20–30 minutes, stirring once or twice.
What to look for: The potatoes should be tender inside with crispy edges, and the onions should be soft and golden brown.
Step 5: Serve hot
Taste and adjust seasoning if needed, then serve right away. Don’t forget to scoop up the flavorful bits from the pan—they’re the best part.
