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+ servings
two slices of Irish Guinness brown bread with butter and tea

Authentic Guinness Irish Brown Bread

Rich and moist, this authentic Irish Guinness brown bread is simple. With lots of dark stout, it slices into a treat on its own or with a full meal.

Course Bread
Cuisine Irish
Keyword beer, bread, brown bread, Guinness, Irish food
Prep Time 30 minutes
Cook Time 50 minutes
Total Time 1 hour 20 minutes
Servings 1 loaf
Author Laura


  • 4 cups whole wheat flour 450 g
  • 2 teaspoons baking soda
  • 1/2 cup rolled oats 50 g (See note)
  • 1/4 cup demarra (turnbinado) sugar 62.5 g
  • 3&1/2 tablespoons unsalted butter, melted 50 g
  • 2 tablespoons molasses
  • 15.2 ounces Guinness stout beer 450 ml


  1. Preheat the oven to 350 degrees F. Butter or oil the loaf pan.

  2. Whisk the dry ingredients (whole wheat flour, baking soda, rolled oats, and sugar) together. Set aside.

  3. In a bowl, mix the butter and molasses. Add the Guinness.

  4. Pour the wet ingredients into the dry ingredients and fold them gently together until well combined.

  5. Spoon the batter into the loaf pan and smooth out the top. It will remain rough-looking, but make sure it is even in the loaf pan.

  6. Bake for approximately 50 minutes, until a toothpick comes out of the bread clean. The internal temperature should be 200 degrees F. Let the bread cool in the pan before unmolding.

Recipe Notes

This bread tastes strongly of whole wheat. If you prefer more oats, add a full cup of oats and lower the flour to 3 & 1/2 cups. 

Catherine says to add the butter and molasses into the Guinness, but I don't think it makes a difference whether you do it that way, or add the Guinness to the butter and molasses.