Roasted Jersey Royals with Caramelized Onions and Rosemary

Preheat oven to 200°C (400°F).

In a large skillet or frying pan, heat 2 tablespoons of olive oil over medium heat. Add the sliced onions and cook, stirring occasionally, until softened and caramelized, about 20-25 minutes. Add balsamic vinegar (if using) during the last 5 minutes and stir well.

While the onions are caramelizing, toss the halved Jersey Royal potatoes with the remaining 2 tablespoons of olive oil, chopped rosemary, salt, and pepper in a large bowl. Make sure potatoes are well coated.

Spread the potatoes in a single layer on a baking sheet.

Roast in the preheated oven for 20-25 minutes, or until the potatoes are tender and slightly golden brown.

Remove the potatoes from the oven and toss with the caramelized onions.

Serve immediately. Garnish with extra rosemary sprigs, if desired.