Grilled Tuna Sandwiches Recipe

Ingredients

• 4 12-ounce tuna steaks (1-inch thick)
• 2 tablespoons olive oil
• 1/2 teaspoon salt
• 1/2 teaspoon black pepper
• 8 slices sourdough bread
• 1/4 teaspoon ground red pepper (optional)
• 1/4 cup finely chopped green onions
• 1/4 cup mayonnaise
• 2 tablespoons fresh lime juice
• 2 teaspoons refrigerated horseradish
• 1 large tomato
• 1 ripe avocado