Tuna & Avocado Toast - Australian Avocados

Ingredients

• 2 slices sourdough, or your favourite bread, toasted
• ½ large ripe avocado, sliced
• 185 g tin tuna in water, drained
• 2 tbsp olive oil
• 1 tbsp chopped fresh parsley
• 1 pinch salt and pepper
• 1 pickled red onion
• lemon wedges to serve