Cheddar, thyme & caramelized onion

• olive oil, for greasing
• 15 g butter
• 2 onions, sliced
• few

Preheat the oven to 200°C/fan 180°C/gas mark 6. Drizzle 1 teaspoon olive oil into the holes in your baking tin(s).

Place the butter, onions and thyme in a small saucep