Preheat oven to 350°F. Grease your donut pans and set aside.
In a mixing bowl, combine the oil, buttermilk, eggs, sugar, salt, baking powder, and vanilla.
Stir in the flour until it makes a batter.
Gently fold in half of the strawberries, careful not to over-mix and mash them up.
Fill the donut pans about halfway full.
Bake for about 16 minutes, or until a toothpick comes out clean.
Puree remaining strawberries.
Mix powdered sugar into the strawberry puree, about ⅓ of a cup at a time, until it makes an icing of your desired consistency.
Let the donuts cool for around 10 minutes. Then, carefully dip each one into the icing and set aside to allow it to set. Top with any sprinkles or add-ons you like.