This salad is a rare healthy favorite for my picky husband. It's best in the summer months when fresh local tomatoes are available. We eat it as a light dinner, or as a side dish for summer BBQs. Enjoy!
If your avocado is very ripe, wait until the end, after you've added all of the other ingredients to add it, or throw it on top if you prefer to keep it in chunks, rather than getting crushed.
If you can't find canned lentils, you can cook dried ones. It just adds an extra step.
Feel free to experiment with your favorite spices and ingredients. I like the combination of the garlic and cumin for a Middle Eastern flavor, but this base goes well with lots of flavors.