One Tray Sausage Bake

• 400 g Kent pumpkin, cut into large chunks
• 500 g pork sausages
• 1 red capsicum (red pepper), deseeded and cut in large chunks
• 1 red onion, cut in large chunks
• 250 g cherry tomatoes
• 2 tbsp balsamic vinegar
• 0.25 cup basil leaves
• 120 g baby spinach leaves