Add the walnuts to a dry skillet over a low/medium heat and toast gently for 3-4 minutes.
Step 2
Finely dice the cucumber and tomato, roughly chop the basil and thinly slice the olives. Add to a serving bowl along with the capers, season and toss to combine.
Step 3
Crumble over the feta cheese and walnuts.
Step 4
Whisk together the oil and balsamic. Drizzle over the salad to serve.