Name: Low Carb Old Fashioned Donut Cake Recipe
Prep time: 15 min
Cook time: 50 min
Total time: 1 h 5 min
Cuisine: American
Ingredients: 2 1/2 cups Almond Flour; 3 tsp Baking Powder; 1 tsp Cinnamon; 1 tsp Nutmeg; 1/2 cup Swerve confectioners sugar substitute (for batter); 3 large Eggs; 1/2 cup Softened Butter; 1 tsp Vanilla Extract; 1/2 cup Heavy Whipping Cream; 1/2 cup Plain Greek Yogurt; 1 cup Swerve Confectioner's Sugar Substitute; 1 tsp Vanilla Extract; Heavy Whipping Cream (as needed, approximately 2-3 tbsp)

Jump to Recipe· 4.3 from 12 reviews

If you're on the hunt for a delightful treat that won't derail your low carb lifestyle, you have found your new favorite. This Low Carb Old Fashioned Donut Cake Recipe takes the beloved flavors and nostalgic charm of a classic donut and transforms them into a moist, tender cake that's perfect for any occasion. Imagine biting into a spiced almond flour cake, crowned with a creamy, lightly sweetened frosting that’s made with love and care. It's a guilt-free indulgence that feels indulgent but keeps your carb count in check, making it the perfect way to satisfy your sweet tooth without compromise.

Ingredients You'll Need

A rectangular loaf cake with a golden-brown crust sits on a wooden board, topped with a thick layer of creamy white frosting spread in loose, wavy lines across the top surface. Behind the cake is a silver spatula resting on a white and light brown striped cloth. The scene is set on a white marbled textured surface. photo taken with an iphone --ar 4:5 --v 7

This recipe relies on simple, wholesome ingredients that work beautifully together to create that iconic old-fashioned flavor and texture. Each component plays a crucial role—whether it’s the almond flour providing a tender crumb or the spices bringing a warm depth.

2 ½ cups Almond Flour: The low carb backbone of the cake, providing moistness and a subtle nutty flavor.
½ cup Swerve confectioners sugar substitute: Keeps sweetness in check without the sugar crash.
3 teaspoon Baking Powder: Ensures the cake rises properly for a nice fluffy texture.
3 large Eggs: Bind everything together and add richness.
½ cup Softened Butter: Adds buttery decadence and moisture to the cake.
1 teaspoon Vanilla: Elevates the flavor with aromatic warmth.
½ cup Heavy Whipping Cream: Contributes to a luscious, tender crumb.
½ cup Plain Greek Yogurt: Adds moisture and a slight tanginess that balances the sweetness.
1 teaspoon Cinnamon: The warm spice essential for that classic old-fashioned taste.
1 teaspoon Nutmeg: A subtle, fragrant spice that complements the cinnamon perfectly.
1 cup Swerve Confectioner's Sugar Substitute: For making the creamy icing to top your cake.
Heavy Whipping Cream (as needed): To thin the icing to your perfect consistency.
1 teaspoon Vanilla (for icing): Adds a smooth, aromatic finish to the frosting.

How to Make Low Carb Old Fashioned Donut Cake Recipe

Step 1: Preheat and Prepare

Start by heating your oven to 350 degrees Fahrenheit. Meanwhile, grease a loaf pan well to ensure your cake comes out effortlessly once baked. This simple step sets the stage for a flawless bake with a beautiful crust.

Step 2: Cream Butter and Sweetener

In a mixing bowl, beat together the softened butter and ½ cup of Swerve confectioners sugar substitute until the mixture is creamy and light. This process incorporates air that will help your cake stay fluffy and tender.

Step 3: Combine Remaining Ingredients

Add the eggs, almond flour, baking powder, vanilla, heavy whipping cream, Greek yogurt, cinnamon, and nutmeg into the bowl. Blend everything thoroughly until you have a smooth, well-combined batter. The spices will start infusing the batter with that nostalgic warm flavor we love in old-fashioned cakes.

Step 4: Bake Until Golden

Pour your batter into the greased loaf pan, smoothing the top gently. Place it into the oven and bake for 45 to 50 minutes. You’re looking for a beautiful golden-brown top and a clean toothpick test to ensure it’s cooked through. The aroma filling your kitchen at this stage is irresistible!

Step 5: Cool Completely

It’s tempting to dig right in, but let your cake cool to room temperature. This allows the structure to set perfectly and makes it much easier to frost without melting the icing.

Step 6: Prepare the Icing

In a clean bowl, combine the 1 cup Swerve confectioner’s sugar substitute with 1 teaspoon vanilla. Add heavy whipping cream one tablespoon at a time, mixing until you reach a smooth, pipeable consistency. This frosting is delightfully fluffy and just sweet enough to complement the subtle spices of the cake.

Step 7: Frost and Serve

Use a piping bag or simply spread the icing generously over your cooled cake. Slice into thick, satisfying pieces and enjoy all the nostalgic flavors of an old-fashioned donut—but with a low carb twist you’ll adore.

How to Serve Low Carb Old Fashioned Donut Cake Recipe

The image shows a loaf of light brown cake with a crumbly texture, topped with a thick layer of smooth white frosting spread in curves. Two slices are cut from the loaf, each with a thick white frosting layer on top and a rough brown edge from baking. The cake sits on a wooden board, with three sticks of cinnamon placed behind it on a white marbled surface. A shiny metal cake server lies next to the board, slightly reflecting the colors around it. The scene is cozy and warm, suggesting a fresh, homemade treat. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

For an extra touch of beauty and flavor, consider sprinkling a dash of extra cinnamon or nutmeg on top of the icing, or garnish with sliced almonds for a bit of crunch. Fresh berries or a light dusting of cocoa powder can also add a lovely contrast both visually and in taste.

Side Dishes

This donut cake pairs wonderfully with a warm cup of coffee, chai tea, or even a dollop of whipped cream on the side. For a fuller brunch spread, serve alongside fresh fruit or a cheese platter with mild flavors that won’t overpower the cake’s rich spices.

Creative Ways to Present

Try cutting the cake into donut-shaped rounds using a cookie cutter to mimic traditional donuts on a tray. You can also pipe the icing in fun swirls and add edible flowers or low carb sprinkles for festive occasions. This versatile Low Carb Old Fashioned Donut Cake Recipe easily becomes the star centerpiece no matter how you dress it up.

Make Ahead and Storage

Storing Leftovers

Your leftover Low Carb Old Fashioned Donut Cake Recipe can be stored in an airtight container at room temperature for up to 2 days or refrigerated for about a week. Just make sure the icing is covered to prevent it from drying out. This makes it a fantastic option for prepping ahead or enjoying as a snack later in the week.

Freezing

If you want to keep your cake fresh for longer, wrap it tightly in plastic wrap and then in foil before placing it in the freezer. It freezes beautifully for up to three months. When you’re ready to enjoy, simply thaw overnight in the fridge for best texture.

Reheating

To warm up your cake, pop a slice in the microwave for about 10 to 15 seconds or let it come to room temperature naturally. Avoid overheating to keep that perfect moist crumb and soft icing intact. If you prefer a warmer frosting, briefly heat the icing separately and spoon it over the cake after reheating.

FAQs

Can I use a different flour instead of almond flour?

Almond flour is key to keeping this recipe low carb and maintaining the moist, tender texture. Using other flours like coconut flour or all-purpose flour will change the flavor and texture significantly, and may increase the carb count.

Is Swerve the only sweetener I can use?

While Swerve works great for its sweetness and sugar-like properties, you can experiment with other powdered erythritol or monk fruit sweeteners. Just be sure they are a 1:1 substitute for sugar to keep the texture and sweetness balanced.

Can I make this recipe dairy-free?

It’s possible to swap out the butter for coconut oil and use a dairy-free yogurt and cream substitute, but the texture and flavor will differ. The cake might be less tender and the frosting less creamy.

How long will the cake stay fresh?

When stored properly, this cake stays fresh for about 5 to 7 days in the refrigerator. If left at room temperature, it’s best consumed within 2 days to maintain freshness and texture.

Can this cake be made into cupcakes?

Absolutely! Divide the batter into lined muffin tins and bake for about 20 to 25 minutes, checking for doneness. The cupcakes will have the same delicious flavor but with a fun individual serving size.

Final Thoughts

This Low Carb Old Fashioned Donut Cake Recipe is a wonderful way to enjoy classic flavors without any of the guilt. It's rich, satisfying, and surprisingly simple to make—perfect for sharing with friends or savoring as a sweet solo treat. I encourage you to give it a try and discover how easy it is to create a low carb dessert that feels truly special and indulgent. You won’t believe it’s good for you!