Butter Roasted Onions
- PREP 10min
- COOK 1hrs 5min
- TOTAL 1hrs 15min
These incredible roasted onions are soft and sweet and perfect for serving alongside other roasted vegetables or meats. For serving, we love adding a drizzle of balsamic or sherry vinegar over the onions.
You Will Need
6 small to medium onions, skins left on with top and bottom trimmed
3 tablespoons (42g) butter, cut into 6 thin slabs
1/2 teaspoon fine sea salt
1/2 teaspoon cracked black pepper
1 to 2 tablespoons chopped fresh herbs like thyme, rosemary, or sage
3 bay leaves
Good quality balsamic vinegar, balsamic glaze, or sherry vinegar, optional
Finishing salt like Maldon flaked salt, optional
Directions
Season the top and bottom cut ends of each onion with salt. Arrange the onions in an oven-safe baking dish.
Slide the onions underneath the broiler and broil until the tops are golden brown and some onion skin chars.
Turn the oven to bake and heat to 400°F (204°C).
Remove the baking dish from the oven and place a slab of butter on top of each onion. Then, mound the herbs onto the butter so that they will fall into and over each onion when the butter melts.
Season with pepper and scatter the bay leaves around the onions.
Cover the baking dish with foil or tuck baking parchment paper into the corners to cover the dish well.
Bake the onions until very soft and sweet, 60 to 90 minutes. Serve as is or with a drizzle of vinegar and a pinch of finishing salt over the top.
Adam and Joanne's Tips
- Vegan: Use a plant-based butter or use olive oil.
- The nutrition facts provided below are estimates.