Place the bread slices in a toaster and toast until golden brown, about 3-5 minutes.

Cut the avocado in half, remove the pit, and scoop the flesh into a bowl. Mash with a fork until smooth but slightly chunky. Add lemon juice, salt, and pepper, then mix well.

Wash cherry tomatoes and slice them into thin rounds.

Spread the mashed avocado evenly over each toasted bread slice. Top with tomato slices, drizzle with olive oil, and garnish with herbs if desired.