- 1 large Spanish onion, thinly sliced
- 4 tablespoons extra-virgin olive oil
- ½ teaspoon fine sea salt, plus more to taste
- ½ teaspoon freshly ground black pepper
- 4 cups seedless red grapes (1 1/4 pounds), destemmed
- 1 teaspoon fennel, coriander, cumin or caraway seeds, lightly crushed
- 1lb raw sausage, poked all over with a fork
- ½ cup parsley, coarsely chopped
- 2 tablespoons chopped chives
- 2 teaspoons rice vinegar or apple cider vinegar, plus more to taste
Roast Onions
Heat oven to 450F. On a large (13-by-18-inch) rimmed baking sheet, toss together onion slices, 2 tablespoons oil, salt and pepper, and spread in an even layer. Roast for 8 to 12 minutes, until the onions turn translucent and the thinnest pieces take on a pale gold color at the edges.
Roast Sausage and Grapes
After 10 minutes, add grapes, seeds and the remaining 2 tablespoons oil to pan with onions, and toss well. Spread in an even layer and nestle sausage into the mixture.
Roast until sausage has browned, 25 to 30 minutes, flipping sausage and tossing grapes and onions halfway through.
To Finish and Serve
Transfer sausages to a platter or to individual plates. Add parsley and chives to pan with grapes and onions and gently toss (this warms up and wilts the herbs). Use a slotted spoon to transfer grapes and onions to plates with the sausages.
Add vinegar to rimmed baking sheet and scrape up any browned bits on the tray. Drizzle pan juices over the grapes and sausages, taste, and sprinkle more salt or vinegar on top, if desired.
