Preheat oven to 400F. Line a baking sheet with parchment paper and set aside.
In a medium bowl whisk together the starter, egg, butter and buttermilk.
In a large bowl whisk together 2 cups flour, oats, baking soda, baking powder, sugar, and salt.
Add the wet ingredients to the dry ingredients and mix together to form a sticky dough. (if its too dry and crumbly add a little more buttermilk, if its way too sticky add some more flour. You want it sticky but not so sticky you can't form it into a ball).
Scrape the dough onto a lightly floured surface and knead two or three times.
Lightly flour the prepared baking sheet and place the ball of dough in the center.
Cut a deep "X" on the top (the cuts should go at least 1/3 the way through the dough).
Brush the top of the dough with buttermilk.
Bake 35-40 minutes, or until the top is golden brown.
Let cool 15 minutes before cutting.
Enjoy!
Notes
Note: You can add in the zest of 1 orange + 1 cup dried currants for a more sweet bread loaf. You can also add in 2 TBSP of carraway seeds (but I wouldn’t do that with the currants and zest, this is an either/or situation).