- 3 red onions, peeled, halved lengthwise
- 1 cup balsamic vinegar
- 1/4 cup extra-virgin olive oil
- 1/3 cup honey
- Sea salt and freshly ground black pepper
- 1/2 stick unsalted butter
- 1/4 bunch fresh thyme
Preheat the oven to 325 degrees F.
Put the onions on a sheet pan, cut side up, and drizzle with balsamic vinegar, olive oil, and honey. Season with salt and pepper then top each with a pat of butter and fresh thyme. Bake for 40 minutes, until the onions are soft and caramelised around the edges.