Cooling/Resting Time: 0 minutes
Rinse diced red onion in a strainer under cool water for 30 seconds, then drain well.
Add rinsed onion, diced tomatoes, jalapeƱos, and avocados to a large mixing bowl.
Whisk together olive oil, lime juice, garlic, salt, and pepper in a small bowl.
Pour dressing over avocado mixture and add cilantro.
Gently fold everything together without mashing the avocados.
Taste and adjust salt as needed.
Serve immediately with tortilla chips or as a topping.