225g/8oz lean bacon slices
1 large ripe avocado, halved, peeled and stoned
juice of ½ lemon
8 large slices bread
50g/2oz/4 tbsp butter, softened
4 tbsp mayonnaise
175g/6oz iceberg lettuce, shredded
2 large tomatoes, thinly sliced
salt and ground black pepper
1 Grill (broil) the bacon for 3 minutes, turning once, until crisp. Transfer to a plate, cover and keep warm.
2 Cut the avocado into slices, across the length, squeeze over the lemon juice to prevent browning, cover and set aside.
3 Toast the slices of bread. Butter them and spread 4 slices with mayonnaise. Layer the bacon, lettuce, tomatoes and avocado on top. Season with salt and pepper and top with the remaining 4 slices of buttered toast.
4 Cut each sandwich in half, diagonally. Serve immediately.