Preheat the oven to 425 degrees F (220 degrees C) and line a baking sheet with parchment paper.
Combine the flour, sugar, baking powder, and salt together in a bowl of a stand mixer fitted with a paddle attachment.
Add in the cubes of cold butter and mix on low speed until the butter is pea-sized.
Then, add in the yogurt, heavy cream, and vanilla. Mix until just combined.
Fold in the blueberries by hand, careful not to over-mix. It's okay if there are dry spots, it will all come together when you mold it into a circle.
Dump the dough out onto the prepared baking sheet and mold into a circle about 1" in thickness. Chill in the freezer for about 15-20 minutes.
Cut the scones into eight pieces and spread them a few inches apart on the baking sheet.
Brush the tops of the scones with heavy cream and sprinkle with turbinado sugar.
Bake for 20-25 minutes or until the tops are a deep golden brown.
Allow to cool for a few minutes, then enjoy!
Notes
Similar to biscuits, temperature is key when making these scones. Everything needs to maintain a cold temperature when being mixed together, which is why I prefer to use a stand mixer so I don't handle everything as much.
You can use your hands to cut the butter into the dough and wooden spoon or rubber spatula to mix everything else in, but you'll have to work quickly so the ingredients don't warm up too much!