Tomato, Avocado and Chilli Soup (Gluten & Dairy Free)

Ingredients

• 1 tbsp olive oil
• 1 onion
• 2 garlic cloves
• 1 small red chilli
• 450 g cherry tomatoes
• 350 ml vegetable stock
• 1 ripe avocado
• 1 tbsp lime juice
• 2 tsp basil
• salt and pepper