Bagels with tuna and cheese - 9Kitchen

Ingredients

• 185g can tuna in spring water, drained
• 1 tablespoon light egg mayonnaise
• squeeze lemon juice, to taste
• 2 green onions, roughly chopped
• 1⁄4 cup chopped pitted black olives, plus extra whole olives, to garnish
• 2 poppy seed bagels, split
• 1 tomato, very thinly sliced
• 1⁄2 cup grated tasty cheese
• baby cos or butter lettuce leaves, to garnish (optional)