The delightful scent of freshly fried Old-Fashioned Buttermilk Donut Bars wafts through my kitchen, transforming an ordinary morning into a cozy retreat. With their soft, cushion-like texture and a stunning Brown Butter Maple Vanilla Glaze, these donut bars are a nostalgic staple that beckon you to slow down and savor life’s simple pleasures. Not only are they a fantastic way to kick-start your day, but they also elevate any gathering into something truly special. You’ll find that whipping up this recipe is both quick and rewarding, allowing you to impress friends and family without the stress. So, what’s not to love about indulging in a piece of homemade goodness? Let’s dive into making these scrumptious treats together!

Why are Buttermilk Donut Bars Amazing?
Nostalgic Comfort: Each bite of these bars brings back memories of cozy mornings spent with loved ones.
Decadent Glaze: The Brown Butter Maple Vanilla Glaze adds a rich finish that turns an ordinary treat into an extraordinary indulgence.
Quick & Easy: With simple ingredients and straightforward steps, these donut bars come together in no time, making them perfect for a last-minute breakfast or snack.
Versatile Treat: Enjoy them warm with coffee in the morning or as a sweet dessert after dinner. You can even customize them with spices or add-ins like chocolate chips!
Crowd-Pleasing Delight: Whether for a family brunch or a gathering with friends, these bars are bound to impress and disappear quickly!
Buttermilk Donut Bars Ingredients
For the Donut Bars
- Unsalted Butter (4 tablespoons) – Adds richness and flavor; consider using salted butter for a touch of saltiness.
- All-Purpose Flour (3 1/2 cups) – Provides structure; measure accurately for best results.
- Baking Powder (2 teaspoons) – Helps the donuts rise for a light texture.
- Kosher Salt (1 teaspoon) – Balances sweetness and enhances flavor.
- Ground Nutmeg (3/4 teaspoon) – Adds a warm, aromatic flavor; try cinnamon as an alternative.
- Baking Soda (1/4 teaspoon) – Activates the dough for additional fluffiness.
- Light Brown Sugar (1/2 cup, packed) – Contributes deeper sweetness with molasses notes.
- Granulated Sugar (1/2 cup) – Rounds off the sweetness.
- Vanilla Extract (1 tablespoon) – Essential for a classic vanilla flavor profile; use pure extract for the best taste.
- Large Eggs (2) – Provide structure and richness.
- Large Egg Yolk (1) – Adds moisture and richness.
- Buttermilk (3/4 cup) – Adds tenderness and a tangy flavor; yogurt can be used as a substitute.
For Frying
- Vegetable Oil (2 to 3 quarts, for frying) – Used for deep frying, ensuring the donuts achieve a golden brown color.
For the Glaze
- Powdered Sugar (2 1/2 cups) – Key for making the glaze; sift if lumpy.
- Water (1/4 cup, plus more as needed) – Achieves the right glaze consistency; adjust as necessary for thickness.
These delightful Buttermilk Donut Bars are a sublime way to brighten your mornings or delight your guests!
Step‑by‑Step Instructions for Buttermilk Donut Bars
Step 1: Melt Butter
Begin by melting 4 tablespoons of unsalted butter in a microwave-safe bowl. Heat it in 15-second intervals until fully melted, which should take about 30–45 seconds in total. Set the butter aside to cool slightly while you prepare the dry ingredients.
Step 2: Prepare Dry Mixture
In a large mixing bowl, whisk together 3 1/2 cups of all-purpose flour, 2 teaspoons of baking powder, 1 teaspoon of kosher salt, 3/4 teaspoon of ground nutmeg, and 1/4 teaspoon of baking soda. This dry mixture is crucial for the structure of your Buttermilk Donut Bars, ensuring they rise beautifully when fried.
Step 3: Mix Wet Ingredients
In the bowl of a stand mixer, combine the cooled melted butter, 1/2 cup packed light brown sugar, 1/2 cup granulated sugar, and 1 tablespoon of vanilla extract. Beat the mixture on medium speed until it becomes light and fluffy, which should take about 2–3 minutes. This step adds a delightful richness to your donut bars.
Step 4: Incorporate Eggs and Buttermilk
Add 2 large eggs, one at a time, to the mixing bowl while the mixer is running, ensuring each egg is fully incorporated before adding the next. Then, add the 1 large egg yolk and 3/4 cup of buttermilk to the mixture and mix until just combined, taking care not to overmix.
Step 5: Combine Mixtures
Gradually add the dry mixture to the wet ingredients, mixing on low speed until no dry flour remains. The dough should be slightly sticky but manageable, creating a delightful consistency ideal for your Buttermilk Donut Bars.
Step 6: Chill Dough
Cover the bowl with plastic wrap or a clean kitchen towel and refrigerate the dough for at least 30 minutes, or up to overnight. Chilling the dough helps it firm up, making it easier to roll out and cut into bars while also enhancing the flavor.
Step 7: Shape and Fry
After chilling, turn the dough out onto a well-floured surface and roll it out until it’s about 1/2 inch thick. Cut the dough into rectangular bars and heat 2 to 3 quarts of vegetable oil in a deep pot or fryer to 360º-365ºF. Carefully lower the bars into the hot oil, frying them for about 1.5 minutes per side or until they are golden brown.
Step 8: Prepare Glaze
While the donut bars cool slightly on a wire rack, prepare the glaze by whisking together 2 1/2 cups of powdered sugar, 1/4 cup of water, and 1 tablespoon of vanilla extract. Aim for a smooth consistency, adjusting with more water if necessary.
Step 9: Glaze Donut Bars
Once the donut bars are cool enough to touch, dip each one into the glaze, coating them generously. Let any excess glaze drip off before placing them back on the wire rack to set. This step adds that irresistible, sweet finish to your Buttermilk Donut Bars, making them truly special.

How to Store and Freeze Buttermilk Donut Bars
Room Temperature: Keep leftover donut bars in an airtight container at room temperature for up to 2 days to maintain their softness and flavor.
Fridge: For slightly longer storage, you can refrigerate them in an airtight container for up to 4 days. However, the texture may become a bit firmer.
Freezer: To freeze, wrap individual donut bars tightly in plastic wrap and place them in a freezer-safe bag. They can be stored for up to 2 months.
Reheating: When ready to enjoy, reheat frozen bars in a toaster oven at 350°F for 5-7 minutes until warmed through, restoring their delightful texture.
What to Serve with Old-Fashioned Buttermilk Donut Bars
Indulging in a warm, sweet treat creates the perfect opportunity to craft a delightful breakfast or dessert spread.
- Fresh Fruit Salad: Bright and colorful, a medley of seasonal fruits adds a refreshing contrast to the rich donut bars, enhancing every bite.
- Creamy Yogurt Parfait: Layer creamy yogurt with granola and berries for a wholesome pairing—its tanginess complements the sweetness of the glaze beautifully.
- Classic Coffee: A steaming cup of coffee, whether black or with cream, brings warmth and enhances the flavors of the donut bars, making for a comforting duo.
- Hot Chocolate: Rich and velvety hot chocolate offers a cozy indulgence alongside the donut bars, perfect for chilly mornings or cozy evenings.
- Maple Syrup Drizzle: For those who love maple, a drizzle of pure maple syrup elevates the sweetness and adds a touch of warmth and nostalgia.
- Chai Tea: The spices in chai tea mingle perfectly with the nutmeg and brown butter, creating a harmonious pairing that delights the senses.
- Vanilla Ice Cream: Serve with a scoop of vanilla ice cream for a delightful dessert. The cold creaminess perfectly balances the warm, glazed donut bars.
Buttermilk Donut Bars Variations
Feel free to play around with these delightful treats, adding your own twist to create a buttermilk bar masterpiece!
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Yogurt Substitute: Swap out buttermilk for yogurt to infuse a thicker consistency and a tangy flavor profile. This provides a delightful creaminess that complements the sweetness.
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Spice It Up: Enhance the flavor by adding 1 teaspoon of cinnamon or a pinch of ground cardamom to the dough. You’ll be enveloped in warm, aromatic scents that will make your kitchen feel cozy!
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Chocolate Chips Boost: Toss in a half cup of mini chocolate chips for a sweet surprise in every bite. The melt-in-your-mouth chocolate elevates the donut experience to pure bliss.
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Nutty Crunch: Fold in chopped nuts such as pecans or walnuts into the dough for a satisfying crunch and earthy flavor. The contrast in texture is truly enjoyable with each mouthful.
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Maple Extract Glaze: For a deeper maple flavor, use maple extract instead of vanilla in the glaze. This will enhance the sweetness, making each bite taste like a warm hug.
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Fruity Twist: Add mashed ripe bananas or applesauce to the batter for a fruity touch. Not only does this add flavor, but it also makes the bars tender and moist.
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Spicy Heat: Incorporate a dash of cayenne pepper into the glaze for a sweet-spicy kick. It’s a surprising combination that tickles the taste buds and offers an exciting twist.
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Berry Bliss: Top your glazed bars with fresh berries like raspberries or strawberries for a refreshing burst of flavor. This not only adds a pop of color but also a beautiful balance of tartness to the sweet glaze.
These variations ensure your Buttermilk Donut Bars are never boring, enticing everyone to savor this classic treat with a fresh twist! And speaking of varieties, check out how you can enjoy these with a cup of freshly brewed coffee or even explore some delicious chocolate chip additions for a sweeter surprise!
Expert Tips for Buttermilk Donut Bars
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Oil Temperature: Use a thermometer to ensure oil is hot enough (360º-365ºF). This prevents greasy, soggy bars and gives that perfect crispy exterior.
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Chill Time: Don’t skip the chilling step! Refrigerating the dough helps firm it up, making it easier to cut and fry, ensuring tender Buttermilk Donut Bars.
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Glazing Technique: Allow the fried bars to cool slightly before glazing. This step helps the glaze adhere better and provides that lovely, shiny finish.
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Flavor Variations: For a unique twist, consider customizing your donut bars with spices like cinnamon or nutmeg, or add-ins such as chocolate chips for extra delight!
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Sifting Powdered Sugar: Always sift powdered sugar before mixing for the glaze. This ensures a smooth consistency, preventing any lumps that can disrupt the glaze’s texture.
Make Ahead Options
These delightful Buttermilk Donut Bars are perfect for meal prep enthusiasts! You can prepare the dough up to 24 hours in advance by chilling it in the refrigerator. Simply cover the bowl with plastic wrap after combining the wet and dry ingredients, allowing the flavors to meld while keeping the dough firm for easier rolling. Additionally, you can make the glaze ahead of time and store it in the refrigerator for up to 3 days; just give it a quick whisk before using. When you’re ready to enjoy, roll out the chilled dough, fry the bars, and dip them in the pre-prepared glaze for a scrumptious breakfast or snack that’s just as delicious as when made fresh!

Buttermilk Donut Bars Recipe FAQs
What type of buttermilk should I use for the best results?
Absolutely! It’s best to use real buttermilk, which adds a delightful tang and tenderness to your donut bars. If you don’t have buttermilk on hand, you can make a quick substitute by mixing 3/4 cup of milk with 1 tablespoon of vinegar or lemon juice. Let it sit for about 5-10 minutes until it thickens slightly.
How should I store leftover Buttermilk Donut Bars?
To keep your leftover donut bars fresh, place them in an airtight container at room temperature for up to 2 days. If you want to keep them longer, you can refrigerate them for up to 4 days in an airtight container. Just remember, the texture may become firmer in the fridge.
Can I freeze Buttermilk Donut Bars?
Certainly! To freeze, simply wrap each donut bar tightly in plastic wrap and place them into a freezer-safe bag or container. They will stay fresh for up to 2 months. When you’re ready to enjoy, reheat them in a toaster oven at 350°F for about 5-7 minutes to restore their delightful texture.
What can I do if my dough is too sticky?
If you find that your dough is too sticky to work with, don’t worry! Lightly flour your work surface and your hands while shaping the bars. Alternatively, you can chill the dough for a bit longer to help it firm up, making it easier to handle. Just be patient and gentle—not rushing this step will give you the best results!
Are Buttermilk Donut Bars safe for those with allergies?
Keep in mind that traditional recipes contain eggs and dairy. For those with allergies, I suggest using an egg replacer for the eggs and a dairy-free milk option (like almond or oat milk mixed with vinegar). Always check your specific ingredients and consult your health professional if you have dietary restrictions.
How do I ensure my Donut Bars are perfectly fried?
Very! To achieve perfectly fried Buttermilk Donut Bars, make sure the oil is heated to 360º-365ºF. Utilize a kitchen thermometer for accuracy. Fry the bars for about 1.5 minutes per side or until golden brown. Always avoid overcrowding the frying pot, as this can lower the oil temperature and result in greasy donuts.

Irresistible Buttermilk Donut Bars with Sweet Glaze Magic
Ingredients
Equipment
Method
- Begin by melting 4 tablespoons of unsalted butter in a microwave-safe bowl. Heat it in 15-second intervals until fully melted, which should take about 30–45 seconds in total. Set the butter aside to cool slightly while you prepare the dry ingredients.
- In a large mixing bowl, whisk together 3 1/2 cups of all-purpose flour, 2 teaspoons of baking powder, 1 teaspoon of kosher salt, 3/4 teaspoon of ground nutmeg, and 1/4 teaspoon of baking soda.
- In the bowl of a stand mixer, combine the cooled melted butter, 1/2 cup packed light brown sugar, 1/2 cup granulated sugar, and 1 tablespoon of vanilla extract. Beat the mixture on medium speed until it becomes light and fluffy, which should take about 2–3 minutes.
- Add 2 large eggs, one at a time, to the mixing bowl while the mixer is running. Then, add the 1 large egg yolk and 3/4 cup of buttermilk to the mixture and mix until just combined.
- Gradually add the dry mixture to the wet ingredients, mixing on low speed until no dry flour remains. The dough should be slightly sticky but manageable.
- Cover the bowl with plastic wrap or a clean kitchen towel and refrigerate the dough for at least 30 minutes, or up to overnight.
- After chilling, turn the dough out onto a well-floured surface and roll it out until it’s about 1/2 inch thick. Cut into rectangular bars and heat 2 to 3 quarts of vegetable oil in a deep pot or fryer to 360º-365ºF.
- Carefully lower the bars into the hot oil, frying them for about 1.5 minutes per side or until they are golden brown.
- While the donut bars cool slightly on a wire rack, prepare the glaze by whisking together 2 1/2 cups of powdered sugar, 1/4 cup of water, and 1 tablespoon of vanilla extract.
- Once the donut bars are cool enough to touch, dip each one into the glaze, coating them generously. Let any excess glaze drip off before placing them back on the wire rack to set.

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