Start by washing all your fresh produce thoroughly under cold running water to ensure it's clean. Then, take your time chopping the cucumbers, peppers, and onions into uniform, bite-sized pieces so every forkful has a perfect mix. Slice the cherry tomatoes in half and chop the olives so they distribute evenly throughout the salad.
Take your large mixing bowl and dump in the rinsed white beans followed by all your chopped vegetables. Sprinkle the crumbled feta cheese, fresh parsley, and dried oregano over the top of the vegetable mixture. Drizzle the olive oil and red wine vinegar directly over the ingredients rather than mixing the dressing separately.
Using large salad servers or two spoons, gently toss everything together until the vegetables are coated in the oil and vinegar. Taste a small spoonful of the salad to see if the flavors are balanced to your liking. Add a pinch of salt and freshly cracked black pepper if needed, then give it one final toss.