1Put the onion and jalapeno in the blender and secure the lid. CHOP for 8-10 seconds until chopped.
2Add the avocados, feta, lime juice and garlic to the blender and secure the lid.
3CHOP for 15 seconds, then MIX for 15-20 seconds until smooth, scraping down the sides and stopping occasionally to use the tamper to press the ingredients into the blades. Season with pepper.
4Spoon the dip into a serving bowl, and sprinkle with cilantro. Serve with tortilla chips.