Chicken and pumpkin traybake recipe

Ingredients

• 3 tbsp olive oil
• 4 boneless chicken breasts (skin on)
• 2 red onions, cut into wedges
• 600 g pumpkin, peeled, deseeded and cut into large chunks
• 300 g cherry tomatoes
• 3 rosemary sprigs
• 4 garlic cloves, skin on
• 150 ml chicken stock (broth)
• 2 tbsp good-quality balsamic vinegar, plus extra for drizzling
• 1 handful parsley, chopped
• 1 pinch each of sea salt and freshly ground black pepper