Cut both apples matchstick style and place the pieces in a bowl.
Pour the lemon juice over the apple pieces in the bowl and toss well to coat all of the apples.
Set the bowl aside to let the apples soak up the lemon juice for 5 minutes, this will prevent browning.
Pour the matchstick carrots into a large mixing bowl.
Add the diced onion and sweetened dried cranberries to the bowl.
Once the apples have sat for at least 5 minutes, add them to the mixing bowl.
Add the vanilla yogurt and mayo to the bowl.
Add the sugar, salt and pepper to the bowl.
Stir all of the ingredients together well.
Add the mandarins to the bowl and stir them into the salad.
Cover the bowl and refrigerate for at least three hours.
Serve and enjoy!