Tex-Mex beans on toast - Good Food Middle East

Ingredients

• 400g can chopped tomatoes
• 2 spring onions, whites and greens separated, both finely sliced
• 2 tsp ground cumin
• 2 tsp mild chilli powder
• 1 tbsp brown or barbecue sauce
• 400g can black beans, drained and rinsed
• 2 slices of your favourite bread
• 1 small ripe avocado
• few good squeezes of lemon or lime juice
• big dollop of natural yogurt