Wash, peel, and cook the beets until they're soft.
Let the cooked beets cool down, then chop them up.
Mix together mayonnaise, Greek yogurt, lemon juice, mustard, salt, and pepper to make the dressing.
Pour the dressing over the chopped beets and mix gently.
Put the salad in the fridge for about an hour to chill.
Serve the salad cold, and if you like, sprinkle some fresh herbs on top. Enjoy!