Mediterranean baked sausages

Ingredients

• 560 gram packet chipolata sausages
• 1 onion, thinly sliced
• 1 clove garlic, crushed
• 1/2 teaspoon chilli flakes
• 400 gram can diced tomatoes
• 1/2 cup white wine
• 1 capsicum, seeded, sliced
• 1 zucchini, halved lengthwise, sliced
• 1 teaspoon brown sugar
• mashed potato, to serve