When the chilly mornings of fall set in, the kitchen becomes my sanctuary, and the smell of cinnamon wafting through the air feels like a warm hug. I discovered this Baked Cinnamon Swirl Protein Cake one weekend while trying to add a nutritious twist to my snacks. A simple batch of batter transformed into a comforting treat that not only satisfies my sweet tooth but also fuels my day with protein and whole grains.
This cake hits the sweet spot—both tasty and packed with wholesome ingredients, making it perfect for breakfast, an afternoon pick-me-up, or even a post-workout indulgence. Plus, it takes only 40 minutes from prep to plate, allowing for more time to enjoy your creation and less time stressing in the kitchen. So, gather your ingredients, and let’s dive into baking a deliciously nutritious treat that even those tired of fast food will love!
Why You'll Love This Baked Cinnamon Swirl Protein Cake
- This Baked Cinnamon Swirl Protein Cake is not only incredibly easy to make, but it also comes together in just 40 minutes, making it a perfect option for busy mornings.
- The delightful blend of cinnamon and sweetness creates a flavor that is irresistibly comforting and satisfying.
- Its versatility means you can enjoy it for breakfast, as a snack, or even as a post-workout treat.
- Visually, the swirling cinnamon pattern adds an appealing touch that makes this cake a beautiful addition to any table.
Baked Cinnamon Swirl Protein Cake Ingredients
Gather these wholesome ingredients to create your delightful Baked Cinnamon Swirl Protein Cake!
For the Batter
- Rolled oats – a nutritious base that adds heartiness to the cake.
- Protein powder – use vanilla or unflavored to boost the protein content and satisfaction.
- Baking powder – ensures a light and airy texture for perfect rising.
- Cinnamon – adds warmth and aroma, making this cake feel like a cozy treat.
- Salt – enhances the sweetness and balances flavors beautifully.
- Unsweetened applesauce – a natural sweetener that keeps the cake moist.
- Almond milk – or any milk of choice, to add moisture without overpowering the flavors.
- Honey – or maple syrup for a vegan twist, adds a touch of sweetness.
- Vanilla extract – infuses lovely flavor, elevating the overall taste.
- Coconut oil – melted, for greasing the baking dish and keeping the cake moist.
For the Cinnamon Swirl
- Brown sugar – creates a deliciously sweet swirl that complements the cake perfectly.
- Cinnamon – additional cinnamon for the swirl, enhancing the cake’s flavor profile.
Now, you’re all set to whip up this delightful Baked Cinnamon Swirl Protein Cake!

How to Make Baked Cinnamon Swirl Protein Cake
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Preheat your oven to 350°F (175°C). Grease an 8-inch square baking dish with melted coconut oil to ensure your cake doesn’t stick while baking.
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Combine the dry ingredients in a large bowl: rolled oats, protein powder, baking powder, cinnamon, and salt. Stir well to blend these wholesome components evenly.
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Mix the wet ingredients in another bowl: unsweetened applesauce, almond milk, honey (or maple syrup), and vanilla extract. Whisk until everything is well combined and smooth.
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Pour the wet mixture into the bowl of dry ingredients. Stir gently until just combined—be careful not to overmix, as this could affect the cake’s texture!
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Prepare the cinnamon swirl mixture by combining brown sugar and additional cinnamon in a small bowl. This will provide a delightful sweet ribbon throughout the cake.
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Layer half of the batter into your prepared baking dish. Next, sprinkle half of the cinnamon swirl mixture over this layer, helping to create that signature flavor.
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Top with the remaining batter and then sprinkle the rest of the cinnamon mixture on top. Using a knife, gently swirl the cinnamon into the batter for a beautifully marbled effect.
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Bake in the preheated oven for 25–30 minutes, or until a toothpick inserted into the center comes out clean, indicating your cake is perfectly baked.
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Cool for a few minutes before slicing. Enjoy warm or at room temperature for a delightful snack or breakfast option.
Optional: Serve with a dollop of Greek yogurt for a creamy addition.
Exact quantities are listed in the recipe card below.
How to Store and Freeze Baked Cinnamon Swirl Protein Cake
Room Temperature: Store leftover cake in an airtight container at room temperature for up to 3 days. This keeps it soft and fresh.
Fridge: For longer shelf life, refrigerate the cake in an airtight container for up to a week. This helps maintain its moisture and flavor.
Freezer: To freeze, wrap individual slices tightly in plastic wrap, then place them in a freezer-safe bag. Enjoy for up to 3 months without losing quality.
Reheating: To enjoy your Baked Cinnamon Swirl Protein Cake warm, microwave a slice for about 15-20 seconds or until heated through.
What to Serve with Baked Cinnamon Swirl Protein Cake?
Indulging in a slice of this delicious cake can be even more enjoyable when you pair it with delightful sides and beverages.
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Fresh Berries: Adds a burst of tartness that balances the cake’s sweetness, making each bite more refreshing.
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Greek Yogurt: A dollop of creamy Greek yogurt enhances the cake’s protein content, creating a heavenly blend of flavors and textures.
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Nut Butter: Spread a layer of almond or peanut butter for a rich, nutty contrast that complements the cinnamon perfectly.
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Chai Tea: The spices in chai echo the warm cinnamon notes, creating a cozy, comforting experience with every sip.
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Honey Drizzle: A light drizzle of honey over the cake adds extra sweetness while enhancing its already delightful flavors.
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Banana Slices: Fresh banana slices not only provide nutrition but add a soft texture that pairs nicely with the cake.
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Dark Chocolate Shavings: A sprinkle of dark chocolate shavings introduces a decadent touch, creating a lovely flavor contrast with the cinnamon.
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Coconut Milk: A splash of coconut milk poured over the cake makes it even more moist and adds a delightful tropical twist.
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Vanilla Ice Cream: Top a warm slice with a scoop of vanilla ice cream to melt and create a delightful dessert experience.
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Hot Coffee: A steaming cup of coffee brings out the cake’s flavors, making for a perfect breakfast or brunch companion.
Baked Cinnamon Swirl Protein Cake Variations
Feel free to get creative with your Baked Cinnamon Swirl Protein Cake—there are so many delicious possibilities!
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Gluten-Free: Substitute rolled oats with certified gluten-free oats for a cake that’s safe for gluten-sensitive friends and family.
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Nut-Free: Use oat milk or coconut milk instead of almond milk, ensuring a nut-free treat that everyone can enjoy without worry.
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Fruity Addition: Fold in 1/2 cup of fresh berries or diced apples into the batter for a burst of flavor and added nutrition. It’s a delightful twist that elevates your cake!
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Date-Sweetened: Replace honey or maple syrup with 1/2 cup of pureed dates for a completely natural sweetness, perfect for a healthier alternative.
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Chocolate Swirl: Introduce a chocolate twist by adding cocoa powder to the cinnamon swirl mixture. Just mix in 2 tablespoons for a rich, decadent flavor that chocolate lovers will adore.
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Spiced Up: Add a pinch of nutmeg or ginger to the batter for an aromatic touch that will warm your heart.
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Protein Boost: Incorporate 1/4 cup of nuts or seeds into the batter for an added crunch and extra protein. This makes for a delightful texture contrast!
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Reduced Sugar: Swap brown sugar with a sugar substitute like monk fruit or stevia to lessen sugar content, maintaining the cake’s sweet essence without compromising health.
Make Ahead Options
These Baked Cinnamon Swirl Protein Cakes are perfect for busy home cooks looking to save time during the week! You can prepare the batter and refrigerate it for up to 24 hours before baking, allowing the flavors to meld beautifully. To do this, simply combine all your dry ingredients and wet ingredients as indicated but don’t spread the batter in the baking dish yet. When you’re ready to enjoy this delightful cake, pour the batter into your greased dish, sprinkle the cinnamon swirl mixture on top, and gently swirl it in before baking as directed. This way, you’ll have a delicious, nutritious treat that’s just as scrumptious and fresh as when made from scratch!
Chef's Helpful Tips
- When making the Baked Cinnamon Swirl Protein Cake, be careful not to overmix the batter as this can lead to a dense texture instead of the light, airy result you want.
- Using unsweetened applesauce not only keeps the cake moist but also adds natural sweetness without excessive sugar.
- For the cinnamon swirl, ensuring your brown sugar is packed allows for a richer and more flavorful swirl throughout the cake.
- Remember to check the cake a few minutes before the suggested baking time since oven temperatures can vary, and want to prevent overbaking for the best results.
Baked Cinnamon Swirl Protein Cake Recipe FAQs
How do I choose the right protein powder?
Absolutely! The type of protein powder you choose can enhance the flavor of your Baked Cinnamon Swirl Protein Cake. I recommend using vanilla protein powder for a touch of sweetness and extra flavor, but an unflavored option will work just as well if you prefer a more subtle taste. Also, look for a protein powder with minimal added sugars or artificial ingredients for a healthier cake!
How should I store the Baked Cinnamon Swirl Protein Cake?
To keep your cake fresh, store any leftovers in an airtight container at room temperature for up to 3 days. If you want a longer shelf life, I recommend refrigerating it, where it will stay delicious for up to a week. Just make sure it’s sealed tightly to maintain moisture and flavor!
Can I freeze the Baked Cinnamon Swirl Protein Cake?
Absolutely! Freezing your protein cake is a great way to save leftovers. To do this, wrap individual slices tightly in plastic wrap and place them into a freezer-safe bag. They can last up to 3 months in the freezer. When you’re ready to enjoy a slice, simply thaw it in the fridge overnight, or microwave it for 15-20 seconds for a warm treat!
What if my cake is too dry?
If you find your Baked Cinnamon Swirl Protein Cake comes out dry, it may be due to overmixing or baking it for too long. For future bakes, mix the batter just until combined and check for doneness a few minutes early. If you want to add moisture, consider serving the cake with a dollop of Greek yogurt or a drizzle of honey!
Is this protein cake suitable for vegans or those with allergies?
Yes! To make the Baked Cinnamon Swirl Protein Cake vegan, simply substitute honey with maple syrup and use a plant-based protein powder. As for allergies, be mindful of the ingredients; for instance, choose gluten-free oats if you have a gluten sensitivity. Always check your protein powder for allergens as well!
How can I make the cake more flavorful?
Very! For an added flavor boost, consider mixing in some chopped nuts or dried fruit to the batter. You can also experiment with adding a splash of almond extract or a pinch of nutmeg along with the cinnamon for an elevated taste. The more the merrier when it comes to delicious ingredients!

Baked Cinnamon Swirl Protein Cake
Ingredients
- 2 cups rolled oats a nutritious base that adds heartiness to the cake
- 1 scoop protein powder use vanilla or unflavored
- 2 tsps baking powder ensures a light and airy texture
- 1 tsp cinnamon adds warmth and aroma
- 1/2 tsp salt enhances sweetness and balances flavors
- 1 cup unsweetened applesauce a natural sweetener
- 1 cup almond milk or any milk of choice
- 1/3 cup honey or maple syrup for a vegan twist
- 1 tsp vanilla extract infuses lovely flavor
- 2 tbsp coconut oil melted, for greasing
- 1/4 cup brown sugar creates a deliciously sweet swirl
- 1 tsp cinnamon additional cinnamon for the swirl
Method
- Preheat your oven to 350°F (175°C). Grease an 8-inch square baking dish with melted coconut oil.
- Combine the dry ingredients: rolled oats, protein powder, baking powder, cinnamon, and salt in a large bowl. Stir well.
- Mix the wet ingredients: unsweetened applesauce, almond milk, honey, and vanilla extract in another bowl. Whisk until smooth.
- Pour the wet mixture into the dry ingredients. Stir gently until just combined.
- Prepare the cinnamon swirl mixture by combining brown sugar and cinnamon in a small bowl.
- Layer half of the batter into your baking dish. Sprinkle half of the cinnamon swirl mixture over this layer.
- Top with the remaining batter and sprinkle the rest of the cinnamon mixture on top. Swirl gently with a knife.
- Bake for 25–30 minutes, or until a toothpick comes out clean.
- Cool for a few minutes before slicing. Enjoy warm or at room temperature.




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