Step 1

Add the red onion, lime juice, garlic, and salt to a large bowl.

Step 2

Halve, pit, and scoop the avocado flesh out of the skins and place it in the bowl with the onions. Mash gently with a fork until the avocado is as smooth or chunky as you prefer.

Step 3

Add the tomatoes, cilantro, and jalapeño, and stir together until well combined. Taste and add more lime juice or salt, if desired. Serve immediately.