Steps
1. Slice the avocado and tomato into thin slices.
2. Thinly slice the red onion.
3. In a bowl, combine the avocado, tomato, red onion, and basil leaves.
4. In a small bowl, whisk together the lemon juice, olive oil, salt, and pepper.
5. Drizzle the dressing over the salad and toss gently to combine.
6. Serve immediately.