Irish Guinness Brown Bread

1: Preheat the oven to 450°F.

2: In a large bowl, combine oats, whole wheat flour, all-purpose flour, dark brown sugar, baking soda, baking powder, and kosher salt.

3: In a separate bowl, whisk together Guinness beer, buttermilk, melted butter, and vanilla extract.

4: Make a well in the dry ingredients and pour the wet ingredients into the well.

5: Stir the batter until it resembles cake batter.

6: Line a loaf pan with parchment paper.

7: Pour the batter into the pan and sprinkle the top with oats.

8: Put the bread in the oven, immediately turn the temperature down to 400°F, and bake for 45 minutes, or until a toothpick comes out clean.