01 -
Peel and pit the avocados. Finely dice the onion, chop the cilantro, dice the jalapeño, and zest and juice the limes.
02 -
Place avocados, onion, cilantro, lime zest and juice, jalapeño, salt, and cumin (if using) in a large mixing bowl.
03 -
Use a fork or potato masher to mash the mixture until combined. Leave chunky or mash until smooth, as preferred.
04 -
Fold in diced tomatoes, if using, and stir gently to incorporate.
05 -
Taste and adjust seasoning with additional salt, lime juice, or cumin. Serve immediately.