How to Make It
In a food processor or blender, combine the onion, garlic, jalapeño pepper, bell pepper, cucumber, tomatoes, salt, pepper, cumin, vinegar, and breadcrumbs. Pulse until chopped. With the machine running, add the oil in a thin stream. Add the dill and pulse once to combine. Dice the avocado and add it to the sauce.
In a large pot of boiling, salted water, cook the pasta until just done, about 10 minutes. Drain the pasta and toss with the sauce.
Spicing It Up
If you like your gazpacho a little spicier, try one of these quick additions:
Leave some seeds in the jalapeño.
Add a dash of Tabasco sauce.
Add a pinch of cayenne.