Mediterranean Tuna Steaks

Ingredients (10)

• 6 tbsp olive oil
• 1 large yellow onion
• 3 cloves garlic
• 1 cup whole tomatoes
• 8 basil leaves
• 2 tbsp flat-leaf parsley
• 4 tuna steaks
• Kosher
• 1 cup black olives
• 4 tsp capers