Go-to fish and bean burritos | New World

Ingredients

• 2 tablespoons olive oil
• 1 onion, chopped
• 400g can Mexican bean mix
• 400g can crushed Mexican-flavoured tomatoes
• 2 tablespoons butter
• Finely grated zest of 1 lemon
• 1 teaspoon paprika
• 800g medium firm fish fillets (such as hoki), cut into 2cm pieces
• 2 large tortillas
• 150g mozzarella cheese, coarsely grated
• 2 green chillies, finely chopped, to serve
• Fresh coriander leaves, to serve
• 1 very large (or 2 medium) ripe avocados
• Juice of 1 lime