Tuscan Tuna Shells

Ingredients

• 0.5 cup red onion
• 0.25 cup basil leafe
• 2.0 tbsp nonpareil caper
• 0.25 cup olive oil
• 2.0 tsp lemon
• 0.5 tsp salt
• 0.25 tsp black pepper
• 3.0 cans tuna fish