Ingredients
Scale
- 6 small onions, skins removed, halved
- 5 tablespoons unsalted butter, melted
- 4½ tablespoons white miso paste
- 3 cups warm water
- 3 thyme sprigs
Instructions
- Heat oven to 500 degrees F.
- In a medium baking dish or a large cast-iron with high sides, whisk together melted butter and miso. Stream in warm water and whisk until well combined.
- Place thyme and onions, cut-side-down, in the pan, cover with foil, and roast for 30 minutes.
- Remove foil, gently flip each onion, baste each with the miso broth. Return to oven for another 35 to 45 minutes, basting every 15 minutes, until onions are very browned and tender.
- Transfer onions to a serving dish with sauce poured over top.