As the aroma of rich molasses and warm spices wafts through my kitchen, I’m transported to the cozy corners of Ireland, where this delightful Broonie—a traditional Irish molasses oatmeal cake—has been a beloved dessert for generations. With its moist texture and hearty oats, this cake offers a comforting embrace, perfect for gathering around the table with friends and family. Not only is the Broonie quick to prepare, making it a wonderful option for busy weeknights or festive celebrations, but it’s also a wholesome alternative to the usual sugary treats. Curious about how you can whip up this delicious slice of Irish tradition? Let’s dive into the recipe!

Why is Broonie so special?
Heartwarming Tradition: This traditional Irish cake is more than just a dessert; it’s a piece of history. Each bite is packed with rich molasses and cozy spices, delivering a delightful taste of Irish culture.
Quick and Easy: Perfect for busy cooks, this recipe is simple and fast to prepare, making it ideal for any occasion.
Crowd Pleaser: The dense texture and unique flavor profile guarantee this Broonie will be the star of any gathering, whether a holiday feast or a casual get-together.
Versatile Ingredient Swaps: Customize it to fit your dietary needs! With options like dairy-free butter and gluten-free flour, everyone can enjoy a slice.
Discover more delightful desserts to try alongside this Broonie by checking out our holiday dessert recipes.
Broonie Ingredients
• Get ready to bake! Here’s everything you need to create your irresistible Broonie.
For the Cake
- Unsalted Butter – Adds richness and moisture to the cake; substitute with dairy-free butter for a lactose-free version.
- Granulated Sugar – Provides sweetness, enhancing the molasses flavor beautifully.
- All-Purpose Flour – Gives structure to the cake; can be replaced with gluten-free flour for a gluten-free option.
- Baking Soda – Acts as a leavening agent, helping your cake rise to perfection.
- Ground Cinnamon – Adds warmth and depth; use fresh cinnamon for an even better flavor.
- Ground Ginger – Provides a spicy kick that beautifully complements the molasses in the Broonie.
- Salt – Balances sweetness and enhances all the flavors in the cake.
- Quick Cooking Oatmeal – Adds texture and moisture; can substitute with old-fashioned oats processed slightly.
- Whole Egg – Binds the ingredients; can be replaced with a flax egg for a vegan alternative.
- Egg Yolks – Adds richness; use one whole egg instead of the two yolks if substituting.
- Unsulfured Molasses – The main flavor component; be sure to pick unsulfured for the cleanest taste.
- Hot Water – Helps dissolve the molasses, ensuring an even mix throughout the batter.
Enjoy crafting this hearty and delightful Broonie that will warm your soul!
Step‑by‑Step Instructions for Broonie
Step 1: Preheat the Oven
Begin by preheating your oven to 350°F (175°C). Meanwhile, take a 9.5 x 12-inch baking pan and grease it with a bit of unsalted butter to prevent sticking. You can also line the bottom with parchment paper for an extra layer of security. This will ensure your Broonie has a perfectly baked exterior.
Step 2: Mix the Dry Ingredients
In a large mixing bowl, sift together the all-purpose flour, baking soda, ground cinnamon, ground ginger, salt, and quick cooking oatmeal. Mix these dry ingredients thoroughly until they are evenly combined, giving you a fragrant blend that captures the essence of the warm spices. Setting this aside prepares you for the next exciting stage of the Broonie preparation.
Step 3: Cream the Butter and Sugar
In your stand mixer, add the softened unsalted butter and granulated sugar. Beat them together on medium speed until the mixture becomes light and fluffy, which should take about 3-5 minutes. The goal here is to create a creamy texture that will serve as the delightful base for your Broonie.
Step 4: Incorporate the Eggs
Next, carefully add the whole egg and two egg yolks into the creamed butter and sugar mixture. Continue to beat until the mixture is smooth and resembles a pale, fluffy batter. This step adds richness to the Broonie, ensuring each slice is moist and delightful.
Step 5: Add Molasses and Water
Gradually pour in the unsulfured molasses and hot water, alternating with the dry ingredient mixture from Step 2. Start with a third of the dry mix, followed by half of the wet ingredients, and repeat until everything is combined. This careful incorporation ensures your Broonie is uniformly moist and flavorful.
Step 6: Combine and Scrape
After all the ingredients have been added, use a spatula to scrape down the sides of the mixing bowl. Continue mixing on low speed until the batter is thoroughly combined — it should be smooth and slightly thick in texture. This is the final touch before baking your beautiful Broonie!
Step 7: Bake the Broonie
Pour the prepared batter into the greased baking pan, smoothing out the surface with a spatula for an even bake. Place it in the preheated oven and bake for about 45 minutes. The Broonie is ready when a toothpick inserted into the center comes out clean, indicating a perfectly baked cake.
Step 8: Cool and Serve
Once baked, remove the pan from the oven and allow the Broonie to cool in the pan for about 15 minutes. Carefully transfer it to a wire rack to cool completely. Serve slices warm or at room temperature, optionally topped with whipped cream and a sprinkle of cinnamon for extra indulgence.

Expert Tips for Baking Broonie
- Butter Temperature: Ensure your butter is softened before mixing. This step is crucial for achieving a light and airy texture in your Broonie.
- Measuring Flour: Spoon your flour into the measuring cup and level it off instead of scooping directly. This prevents the cake from being too dense.
- Oat Texture: Avoid over-processing the oatmeal. The oats should remain coarse to provide that delightful texture in your Broonie.
- Quality Molasses: Opt for unsulfured molasses, which offers a smoother and cleaner flavor, enhancing the rich taste of the cake.
- Cooling Time: Allow the Broonie to cool completely before slicing. This ensures it holds its shape and makes for a neater presentation.
- Storage Advice: Store any leftovers in an airtight container at room temperature to maintain moisture, ensuring a delicious treat for days!
How to Store and Freeze Broonie
Room Temperature: Store your Broonie in an airtight container at room temperature for up to 7 days to keep it moist and delicious.
Fridge: For slightly longer storage, simply refrigerate it in an airtight container; it will stay fresh for up to 10 days.
Freezer: Wrap individual slices of Broonie in plastic wrap and place them in a freezer-safe container or freezer bag. It freezes beautifully for up to 3 months, perfect for future enjoyment.
Reheating: To enjoy your Broonie warm, simply thaw in the fridge overnight and reheat in the microwave for 10-15 seconds, or gently warm in the oven for a few minutes.
Make Ahead Options
These delightful slices of Broonie are perfect for meal prep enthusiasts! You can prepare the batter up to 24 hours in advance by mixing all the dry ingredients and creaming the butter and sugar, then cover and refrigerate the mixture. To maintain quality, refrigerate the batter in an airtight container, and for the best results, allow it to come to room temperature before baking to ensure even cooking. Alternatively, you can bake the Broonie ahead of time and store it at room temperature for up to 3 days. Just wrap it tightly to keep it moist, and when ready to serve, warm slices briefly in the oven or microwave for that freshly baked taste, ensuring your dessert is just as delicious as the day it was made!
Broonie Variations & Substitutions
Feel free to personalize your Broonie and make it truly yours with these creative twists and swaps!
- Dairy-Free: Use coconut oil or dairy-free butter instead of unsalted butter for a lactose-free treat.
- Gluten-Free: Swap all-purpose flour with a 1:1 gluten-free flour blend to accommodate gluten sensitivities.
- Nuts & Fruits: Add chopped walnuts, pecans, or raisins for a delightful texture and an extra sweet surprise.
- Brown Sugar: For a richer caramel flavor, replace granulated sugar with brown sugar.
- Spice Up: Boost the flavor with a pinch of nutmeg or cardamom for an aromatic twist that elevates the traditional profile.
- Vegan Option: Use a flax egg in place of the whole egg and yolks, making this cake entirely plant-based.
- Old-Fashioned Oats: Substitute quick oats with old-fashioned oats, processed slightly for a chewier texture.
- Cinnamon Swirl: For a beautiful marbled effect, swirl in a mix of cinnamon and sugar before baking.
Don’t forget, you can serve your warm Broonie alongside a scoop of vanilla ice cream, or try pairing it with a cup of freshly brewed tea for a delightful afternoon experience. If you’re interested in experimenting further, check out our holiday dessert recipes for more inspiration!
What to Serve with Moist Irish Molasses Oatmeal Cake (Broonie)
Imagine a table set with warm, inviting dishes that enhance the delightful flavors of this enchanting Broonie, perfect for any celebration or cozy gathering.
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Whipped Cream: Light and airy, it complements the cake’s richness while adding a delightful creaminess to each bite.
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Vanilla Ice Cream: The classic pairing provides a creamy contrast to the warm molasses cake, creating a heavenly dessert experience.
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Spiced Pear Compote: Offers a sweet and tangy element, the spices linking beautifully with the cake’s own warm flavors for a cozy touch.
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Coffee or Tea: The warmth and aromatic notes of freshly brewed coffee or a soothing herbal tea uplift the molasses flavors, making each slice even more enjoyable.
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Candied Ginger: This zesty addition creates a stunning flavor pop alongside the cake, enhancing its ginger notes while adding a satisfying chewiness.
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Chocolate Ganache Drizzle: Rich, velvety chocolate sauce serves as an indulgent counterbalance to the sweet spiciness of the Broonie, enhancing its dessert status.
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Fresh Berries: A burst of tartness from berries like raspberries or blackberries provides a refreshing contrast, balancing the cake’s sweetness beautifully.
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Nutty Oat Crumble: A crunchy, toasted oat topping adds texture and harmony with the cake’s ingredients, further celebrating the oatmeal theme in a delightful new way.
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Chai-Spiced Pecans: These sweet-spiced nuts offer a satisfying crunch and a warm, nutty flavor echoing the cozy spices of the Broonie, perfect as a hand-held treat alongside the cake.

Broonie Recipe FAQs
What type of molasses should I use for Broonie?
Absolutely! For the best flavor, always choose unsulfured molasses. This variety is cleaner and has a sweeter taste, enhancing the rich, deep flavors of your Broonie. It’s typically found in the baking aisle of most grocery stores.
How should I store my Broonie?
Store your Broonie in an airtight container at room temperature for up to 7 days. If you want it to last longer, you can refrigerate it for up to 10 days. Just ensure that it’s well-sealed to maintain moisture and taste.
Can I freeze Broonie? If so, how?
Yes, you can! To freeze Broonie, wrap individual slices in plastic wrap and then place them in a freezer-safe container or freezer bag. It will keep well for up to 3 months. When you’re ready to enjoy a slice, simply thaw it in the fridge overnight and reheat in the microwave for about 10-15 seconds, or warm it gently in the oven.
What can I do if my Broonie turns out too dense?
If your Broonie ends up dense, it’s possible that the flour was packed too tightly or there was an error in measuring. For next time, spoon and level the flour rather than scooping it directly from the bag. Make sure to mix the batter just until combined to avoid overworking the gluten, which can lead to a denser cake.
Can I make Broonie gluten-free?
Very! You can substitute all-purpose flour with a gluten-free flour blend designed for baking. Just ensure that the flour blend contains a binding agent to achieve the desired texture. Many of these blends are available at your local grocery store, making it easy for everyone to enjoy this delightful dessert.
Is the Broonie safe for pets?
While the ingredients in Broonie are safe for humans, it’s best to keep it away from pets. The sugar and butter can upset their stomachs, and chocolate (if included in any variations) can be toxic. Always double-check specific ingredients and consult your vet if you’re unsure.

Irresistibly Moist Broonie: The Ultimate Irish Oatmeal Cake
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and grease a baking pan with unsalted butter or line it with parchment paper.
- In a large mixing bowl, sift together the flour, baking soda, cinnamon, ginger, salt, and oatmeal.
- In a stand mixer, cream the softened butter and sugar together until light and fluffy, about 3-5 minutes.
- Add in the whole egg and egg yolks, beating until smooth and fluffy.
- Gradually add the molasses and hot water, alternating with the dry mix to combine.
- Scrape down the bowl and mix on low speed until the batter is smooth.
- Pour the batter into the greased pan and bake for about 45 minutes, or until a toothpick comes out clean.
- Let it cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before serving.

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