Line baking sheet with parchment paper and set aside. Preheat oven to 400 degrees.
Combine your flour, sugar, salt, and baking powder into the food processor.
Cut up butter into thicker squares and toss them into the food processor.
Next, pulse the butter and dry ingredients together. The butter looks pea-sized when it's well-incorporated.
Add the dry ingredients to the bowl of a stand mixer and start adding your sourdough starter and vanilla extract.
Mix the ingredients together using the dough hook on the lowest setting. If the dough looks too dry, gradually start adding water until the dough starts to come together. Do not add more than two tablespoons of water. Otherwise the dough will be too wet.
Once the dough has come together about 80%, add in a handful of cut up strawberries. Mix until well-incorporated.
Form the dough into an 8 inch disk by pressing down on the dough with your hands. Make sure the edges are smooth.
Stick the disk in the freezer for 5 - 10 minutes or the fridge for about 30 minutes so the dough can get cold again.
Next, take a knife or bench scraper and cut the scone dough into 8 triangular pieces.
Bake the strawberry scones at 400 degrees for 13 - 15 minutes.
While the scones are baking, add the powdered sugar, vanilla extract, and heavy cream/milk to a bowl and whisk together. Add milk depending on your preferred icing consistency.
Once the scones are done baking, brush on icing and add fresh strawberries on top. Allow scones to cool for about 5 minutes.