Prepare the Ingredients: Peel the cucumbers and carrots. Slice the cucumbers into thin rounds and grate the carrots. Boil the eggs, peel them, and chop them into small pieces.
Mix the Vegetables and Eggs: In a large bowl, combine the cucumbers, grated carrots, cooked corn, and chopped eggs.
Prepare the Dressing: In a small bowl, mix the thick yogurt, mustard, and salt until well combined.
Combine and Toss: Pour the yogurt dressing over the vegetable and egg mixture. Toss everything together gently until evenly coated.
Garnish and Serve: Garnish with finely chopped green onions and parsley for a fresh finish. Serve chilled and enjoy!