Preheat the oven to 350℉. Butter the inside of the loaf pan liberally. Make a parchment paper sling for inside the pan so you can easily remove the loaf after it is baked.
butter
Mix the Odlum's whole wheat flour, rolled oats, brown sugar, baking soda and salt together in a mixing bowl with a whisk.
3 cup Odlums wholemeal wheat flour, ½ cup Bobs Red Mill extra thick rolled oats, 2 tablespoons brown sugar, 1 teaspoon baking soda, 1 teaspoon salt
Make a well in the center of the dry mixture for the liquid ingredients.
Pour in the molasses, beer, buttermilk, and melted butter into the bowl of dry ingredients.
⅓ cup molasses, 8 oz dark beer, 1 cup buttermilk, 2 tablespoons butter
Stir together until all the ingredients are just combined well.
Spread the batter into the prepared loaf pan, smoothing it out evenly with a spatula.
Sprinkle the top of the loaf with some additional rolled oats.
Bake on the center rack for 50 to 55 minutes, until a toothpick inserted in the center comes out with a few crumbs but no wet batter.
Remove the bread from the oven and allow to cool 15 minutes before slicing.
Optionally, you can tip the loaf out of the pan or lift out using the parchment paper sling, and return the loaf to the oven, directly on the rack, for 5 minutes to make a crust on the sides and bottom of the loaf.