Gather all ingredients and wash the vegetables thoroughly.
Slice the avocados in half, remove the pits, and scoop the flesh into a bowl.
Dice the avocado into bite-sized pieces.
In a large mixing bowl, combine mixed greens, cherry tomatoes, and red onion.
Add the diced avocado to the vegetable mixture.
In a small bowl, whisk together olive oil, lemon juice, salt, and pepper.
Pour the dressing over the salad mix and gently toss to combine.
Sprinkle the crumbled feta cheese on top.
Serve immediately for best flavor and texture.
Enjoy your fresh avocado salad as a nutritious meal or side dish!