Baked Fish with Basil and Blistered Tomatoes

What you’ll Need

• 1 Tbsp olive oil
• 1 medium-sized red onion, halved lengthways and then thinly sliced
• 1

What to do

1. Heat the olive oil in a medium-sized saucepan over medium heat. Cook the onion for 5 minutes, or until just starting to soften. Add the garlic, chilli, chopped basil, tomatoes and balsamic vinegar, and cook for another 10–15 minutes. Sweeten and season to taste.
2. Meanwhile, preheat the oven to