This is a very hearty salad that can be a meal in itself in just 15 minutes.
Cook soba according to package instructions. Drain.
In a bowl, combine cucumber, cabbage, shallot, parsley, lemon juice, and oil. Add soba; season with salt and pepper. Refrigerate until chilled, about 30 minutes. Toss with feta, and serve garnished with parsley.
Buckwheat noodles are not always gluten-free; check the box.