Preheat the oven to 400°F. Grease the loaf pan with softened butter or coat with cooking spray.
In a large bowl: combine flour, salt, brown sugar, oats, baking powder and whisk.
In a separate medium bowl: combine buttermilk, melted butter, molasses and whisk. Add beer and mix.
Pour the contents of the medium bowl (wet mix) in the large bowl with the dry mixture. Whisk everything together until well combined. Pour the smooth batter into the loaf pan. Optional: sprinkle 1 tbsp of rolled oats on top of the batter.
Bake for 45-50 minutes or until a toothpick placed in the center of the bread comes out clean.
Spread Irish butter, jam/fruit preserves over the slices of bread or serve with Irish stew. Enjoy!