Grilled Tuna and Avocado Bruschetta | Savory

Ingredients

• 1 red onion
• 12 oz mixed cherry tomatoes
• 2 avocados
• 1 lime
• 5 tbsp olive oil
• 1/2 cup cilantro
• 1 loaf unsliced country bread
• 1 lb tuna steaks
• 2 tbsp mayonnaise
• 2 cups arugula