1/2 onion, thinly sliced and halvedInstructions
Mix oil, vinegar, water, and garlic in a small, sealable container; shake well and set aside while chopping ingredients. Combine chopped avocado, tomatoes, peppers, squash, and onion in a large bowl; pour marinade over avocado mixture and toss lightly with a spoon. Serve as a side dish or with corn chips.