01 - Toast the slices of country-style bread until golden and crisp.
02 - Halve and pit the avocado, then scoop the flesh into a bowl and mash until smooth with a fork.
03 - Rinse the heirloom tomatoes and slice them into thin rounds.
04 - Spread the mashed avocado evenly over the toasted bread. Arrange the tomato slices on top.
05 - Drizzle with extra virgin olive oil and garnish with fresh basil leaves. Serve immediately.