• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar
The Storied Recipe logo
  • Episodes
  • Recipes
  • Prints Shop
  • About
  • Contact
menu icon
go to homepage
  • Episodes
  • Recipes
  • Prints Shop
  • About
  • Contact
subscribe
search icon
Homepage link
  • Episodes
  • Recipes
  • Prints Shop
  • About
  • Contact
×
Home » Baking

Rúgbrauð Icelandic Rye Bread (No Yeast, Slow Cooked)

Last Modified: Apr 30, 2025 · This post may contain affiliate links

Jump to Recipe·Print Recipe

Welcome to The Storied Recipe Podcast, a podcast about food, culture, and love. 

This recipe for Rúgbrauð Icelandic Rye Bread came from my friend Gudmunda. While you make this Icelandic staple, make sure to listen to my podcast guest, Chef Stefan, episode, Whale, Puffin, Horse and Icelandic Fish Stew. Chef Stefan is the owner of one of Reykjavik’s most famous restaurants, þrír Frakkar and I'm sure you will learn a lot about the whaling industry, some history of Iceland, tourism, and of course, Icelandic food.

Two slices of Icelandic rye bread with butter on it.

Baking bread is normally a daunting task, but this recipe is nothing to be afraid of. You simply throw all of the ingredients together in a Le Creuset dutch oven and then bake it overnight, and in the morning, you will have bread that has a slightly sweet flavor that is dense, chewy, and delicious.

P.S. This Icelandic bread pairs perfectly with Plokkfiskur, a fish stew, from my podcast guest, Chef Stefan, both of which are essential food staples from Iceland.

Hands placing a full loaf of Icelandic rye bread on a wooden cutting board.

Ingredients & Substitutions

  • Rye flour - Dark rye flour
  • Whole wheat flour - Since this recipe uses whole wheat flour, it is not a gluten-free recipe. Substitute any 1-for-1 gluten-free flour or maybe try Sorghum flour or Amaranth flour for more similar flour to a dense whole wheat flour. (Here is a larger list of gluten-free flours from The Kitchn).
  • Baking soda
  • Dark syrup - Substitution: maple syrup, molasses, or golden syrup. I used half honey and half molasses when I made my bread.
  • Buttermilk   
Someone cutting slices of Iceland rye bread.

Instructions

  • Mix all ingredients together 
  • Pour dough into a Le Creuset dutch oven with a lid and bake for 10-12 hours or overnight.

Icelandic Traditional Method of Making Dark Rye Bread 

You might have noticed the extremely slow baking time for the bread above in the instructions, and while you might be worried about your electricity bill after making this loaf, the traditional way this slow-baked bread was made was made without electricity at all and was actually kept outside, buried in a hole. Iceland is located on the Mid-Atlantic Ridge, which is in between two tectonic plates and is a place for Earth's mantle to come to the surface. How is this relevant to rye bread? Well, Iceland is on a hot spot and in the ground, making the ground near geysers or hot springs perfect for low and slow baking using geothermal heat. Simply make the recipe, place it in a sealed container, dig a hole near a natural hot springs, put it in the hot water, cover it with sand, and wait anywhere between 12 and 24 hours, and you'll have a hearty rye bread that used no electricity. 

Now you know where the many names of this bread came to be: thunder bread, volcano bread, hot spring bread, geysir bread, or simply Icelandic Rúgbrauð.

Equipment

  • Mixing bowl
  • Dutch oven with lid or loaf pan (Click here to see a zillion options for beautiful Le Creuset Dutch Ovens)
  • Aluminum foil (optional if you don't have a lid)

Storage

  • Make sure that the bread has cooled down to room temperature, then wrap it in a towel or place it in a paper bag and leave it in a cool, dry place for up to a week.
  • If you are freezing your bread, place in freezer bags and it will be good for up to 3 months. 
A flat-lay of different sized plates with slices of Icelandic rye bread along with a photo book from my trip to Iceland.

Listen to Chef Stefan's Episode Now

More Bread Recipes

  • golden venezuelan arepas are tossed on a pan and topped with creamy chicken and avocado filling
    Arepas Venezolanas: Reina Pepiada (with Chicken & Avocado)
  • overhead shot trinidadian doubles
    Gluten Free Doubles {Trinidad Street Food}
  • two perfectly golden slices of sourdough toast topped with mushrooms, gravy, and loads of healthy toppings
    Easy Creamy Garlic Mushroom Toast + 15 Topping Ideas
  • hand holds flaky spiraled roti paratha (aka roti canai in malaysia) above lush green foliage.
    How to Make Flaky Roti Paratha (Malaysian Roti Canai)
  • Semla bun piled high with whipped cream with raspberries and almonds in the background
    Traditional Semla Recipe: Fat Tuesday Cardamom Buns
  • Hungarian poppy seed bread pudding in a white dish on wooden board
    Mákos Guba: Hungarian Poppy Seed Bread Pudding
  • puffy pillowy backlit mini bread rolls sit on a wire rack in brightly lit scene
    Mini Bread Rolls (Soft, Adorable Dinner Rolls)
  • three perfect slices of cinnamon and brown sugar swirl bread on vintage white plate
    Cinnamon and Brown Sugar Swirl Bread (Best for Toast!)
Print

Recipe

clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon

Rúgbrauð Icelandic Rye Bread (No Yeast, Slow Cooked)


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

  • Author: Hannah Neeper
Print Recipe

Description

Icelandic rye bread was traditionally cooked in the hot springs, which we approximate now by cooking in a slow cooker or Le Creuset Dutch Oven of 200 degrees. Made without yeast, the rise comes from baking soda and buttermilk, resulting in a dense, moist, soft slightly sweet loaf traditionally that pairs beautifully with savory or sweet toppings.


Ingredients

Units Scale
  • 6 cups rye flour
  • 3 cups whole wheat flour
  • 4 1/2 tsp baking soda
  • 500 gr dark syrup *See Note 1
  • 1 1/2 liters buttermilk


Instructions

Cue Up The Episode!

  1. Make sure to listen to Chef Stefan on The Storied Recipe Podcast, Whale, Puffin, and Icelandic Fish Shew while you make this traditional Rúgbrauð recipe!

Make The Recipe

  1. Preheat the oven to 210°F / 100°C.
  2. In a mixing bowl, put all of the ingredients together and mix with a wooden spoon until combined. 
  3. In a Dutch oven, cast iron pot, or other bread pan, place the dough and cover with a tight-fitted lid. 
  4. Bake for 10-12 hours or overnight.
  5. Serve with a little bit of butter or with Plokkfiskur (Icelandic fish stew)!

Notes

  • Note 1: I used half honey, half molasses in my bread but you can use maple syrup or molasses without cutting it in half. The choice is yours.

There's a story behind this recipe!

Tune in to The Storied Recipe Podcast on Apple Podcasts or Spotify to hear more!

Share this:

  • Click to share on Facebook (Opens in new window) Facebook
  • Click to share on Pinterest (Opens in new window) Pinterest
  • Click to share on X (Opens in new window) X
  • Click to share on LinkedIn (Opens in new window) LinkedIn

Before You Go... Try One of These?

More Baking

  • thumbnail overhead shot of ginger mandarin no bake layered dessert. garnished with sliced oranges, crushed gingersnaps, citrus peels, and fresh mint leaves.
    3 Ingredient No Bake Mandarin Ginger Pie Dessert
  • 28 Best Crackers for Charcuterie Boards: Ideas and Recipes
  • Kaiserschmarrn (Fluffy Austrian Torn Pancakes)
  • A tray of brownies divided into 18 brownies with totally different toppings.
    97 Brownie Toppings: Easy Ways to Jazz Up Brownies

Reader Interactions

Would love to hear from you! Cancel reply

Your email address will not be published. Required fields are marked *

Recipe rating 5 Stars 4 Stars 3 Stars 2 Stars 1 Star

Primary Sidebar

dark and moody photo of Becky Hadeed kneading arepas dough

Welcome, Friend!

I’m Becky Hadeed, a mother to 4, curious home cook, lover of extraordinary light, and host of The Storied Recipe Podcast. I consider it a great honor that my guests entrust me with their stories and allow me photograph and share their most treasured family recipes.

More About Me ->

Most Popular Recipes

  • two slices of chewy golden nian gao on pink plate
    Baked Nian Gao: Glutinous Rice Cake (with Sticky Rice Flour)
  • hand holds flaky spiraled roti paratha (aka roti canai in malaysia) above lush green foliage.
    How to Make Flaky Roti Paratha (Malaysian Roti Canai)
  • pollo frito puerto rican fried chicken with no flour in basket lined with red checked napkin
    Pollo Frito: Puerto Rican Fried Chicken (Without Flour)
  • delicate white dish holds fish cooked in tomato sauce, topped with gently caramelized onons, dill and parsley
    Ukrainian Red Fish in Tomato Sauce

Follow in Your Favorite Player

Apple PodcastsSpotifyGoogle Podcasts

Listen to the Latest

Featured Episodes

  • 058 "I Wanted Something Different" with Juan Salazar of La Coop Coffee
  • 022 "I am Piotr's Granddaughter" with Lydia Cottrell
  • 019 "We Were Not Leprosy" with Suwanee Lennon
  • 077 Arabic Feasts with My Husband, John Hadeed
dark and moody photo of Becky Hadeed kneading arepas dough

Welcome, Friend!

I’m Becky Hadeed, a mother to 4, curious home cook, lover of extraordinary light, and host of The Storied Recipe Podcast. I consider it a great honor that my guests entrust me with their stories and allow me photograph and share their most treasured family recipes.

More About Me ->

Most Popular Recipes

  • two slices of chewy golden nian gao on pink plate
    Baked Nian Gao: Glutinous Rice Cake (with Sticky Rice Flour)
  • hand holds flaky spiraled roti paratha (aka roti canai in malaysia) above lush green foliage.
    How to Make Flaky Roti Paratha (Malaysian Roti Canai)
  • pollo frito puerto rican fried chicken with no flour in basket lined with red checked napkin
    Pollo Frito: Puerto Rican Fried Chicken (Without Flour)
  • delicate white dish holds fish cooked in tomato sauce, topped with gently caramelized onons, dill and parsley
    Ukrainian Red Fish in Tomato Sauce

Follow in Your Favorite Player

Apple PodcastsSpotifyGoogle Podcasts

Listen to the Latest

Featured Episodes

  • 058 "I Wanted Something Different" with Juan Salazar of La Coop Coffee
  • 022 "I am Piotr's Granddaughter" with Lydia Cottrell
  • 019 "We Were Not Leprosy" with Suwanee Lennon
  • 077 Arabic Feasts with My Husband, John Hadeed
  • Episodes
  • Recipes
  • Prints Shop
  • About
  • Contact

Footer

↑ back to top

About

  • About Becky
  • How to Listen to The Storied Recipe Podcast
  • Reviews of The Storied Recipe
  • Privacy Policy

Newsletter

  • Sign Up! for weekly updates (and occasional gifts!)

Contact

  • Contact
  • Service
  • Media Kit
  • FAQ

As an Amazon Associate, I earn from qualifying purchases.

Copyright © 2025 Brunch Pro on the Feast Plugin