Mixed greens Salad with Hummus dressing

2 tomatoes, chopped into large pieces

2 cucumbers, chopped into large pieces

8 kalamata olives, pitted and chopped for dressing:

1/4 cup prepared hummus (store-bought is fine for this as you are adding to it, but use your own if you have it)

1/4 cup plain yogurt

1 tbsp freshly squeezed lemon juice

2 tbsp olive oil salt and pepper to taste *optional

2 tbsp crumbled feta cheese