The idea for this salad came from a (very Mexican) tostada I had for lunch recently at the Huntington Library and Gardens near Pasadena. Most tostadas top the tortillas with the standard refried beans made with pinto beans. This tostada used black beans instead, making it distinctive and very good.
This got me thinking about whether some other types of beans might also be used to make a tostada. How about garbonzo beans/chickpeas? And you can buy this with the beans already mashed up and seasoned, ready to use: hummus.
Once I decided to make a tostada with hummus, an Eastern Mediterranean theme was obvious. I chose Greek, with feta cheese and Kalamata olives, but I wanted something else. Since I was already using one dip from that part of the world, I thought about tzatziki, the Greek yogurt and cucumber sauce/dip, which I really like. But it didn’t seem to be quite right putting dollops of tzatziki on the tostada. Instead, I put cucumber pieces on the salad and made a dressing based on the ingredients in tzatziki.
I started the dressing with my standard vinaigrette ingredients of 3 tablespoons olive oil and 1 tablespoon lemon juice, to which I added 2 tablespoons of Greek yogurt. This produces a slightly thickened dressing that you might call a tzatziki vinaigrette and would be one option. I decided I wanted a thicker, creamier dressing more like tzatziki and added a third tablespoon of yogurt and then a fourth. My suggestion is to proceed in this way, stopping when you get a consistency that you like.
I think the key to this salad is moderation and balance. You don’t want too much of any one ingredient such that it dominates.
Greek chicken tostada
4- or 5-ounce piece of chicken breast
2 corn tortillas
1 cup (or so) cucumber, in small pieces
Kalamata olives, cut in half
3 tablespoons olive oil
1 tablespoon lemon juice
2 to 4 tablespoons plain Greek yogurt
1 clove garlic, pressed
1/2 teaspoon finely chopped fresh dill
Bake the chicken breast in advance. When cool, pull it apart to make shredded chicken.
So the dressing can be well chilled, an hour or so before serving, mix the olive oil, lemon juice garlic, dill, and the yogurt. Start with 2 tablespoons yogurt and whisk everthing together to see the consistency. If desired, add more yogurt to get your preferred consistency. Refrigerate the dressing, as it should be well-chilled before serving.
Going in the other direction on temperature, I think the hummus and chicken, which will top the cooked tortillas, should be closer to room temperature, so take them out of the refrigerator an hour or so before making the salad.
Heat a thin layer of oil in a pan. When the oil is hot, put in a tortilla, cook for about 30 seconds on each side until it starts to crisp up. You want it a little crispy but not as hard as a tortilla chip. Repeat with the second tortilla.
Put the tortillas side-by-side on a plate. Spread on a thin layer of hummus. Add the shredded chicken, then the chopped spinach, and on top of that the cucumber pieces.
Whisk the previously made dressing and spoon on top the salad. Top with a sprinkling of crumbled feta cheese and the Kalamata olives.