Rinse the baby arugula and fresh blackberries under cold running water for about 1 minute and pat them dry.

Slice the avocado in half, remove the pit, and scoop out the flesh. Cut into wedges.

In a large bowl, combine the arugula, blackberries, and sliced red onion. Gently fold in the avocado wedges and chopped walnuts.

In a small bowl, whisk together the olive oil, balsamic vinegar, honey, salt, and black pepper until well combined.

Drizzle the dressing over the salad ingredients and toss gently to combine.

Serve immediately, ensuring all ingredients are coated with dressing.