This keto blueberry chocolate cake for one is low in carbs and high in protein. Bursting with juicy blueberries and rich chocolate flavor, this single-serve protein cake works perfectly as a healthy dessert or a decadent breakfast. It’s moist and fluffy despite being oil-free and gluten-free.
Many keto bakes rely heavily on added fats to achieve texture, and alternative recipes can be dry or bland. This recipe avoids both pitfalls by combining coconut flour, protein powder, Greek yogurt and a touch of milk to produce a tender, chocolatey cake without butter or oil. It comes together quickly in one bowl and bakes in about 20–25 minutes.
Keto blueberry cake ingredients
This mini keto blueberry cake uses simple, wholesome ingredients that deliver flavor and nutrition. For clarity, the list below is grouped into dry and wet ingredients.
Dry ingredients:
- Coconut flour
- Protein powder (chocolate or unflavored)
- Cocoa powder
- Granulated sweetener of choice
- Baking powder
Wet ingredients:
- Egg
- Egg whites (or substitute with an extra whole egg)
- Greek yogurt (or firm vegan yogurt for dairy-free)
- Milk of choice (dairy or nondairy)
- Blueberries (fresh or frozen)
Protein chocolate glaze
A quick, tangy chocolate glaze made from Greek yogurt and cocoa elevates the cake. It’s simple to make and adds an extra layer of chocolate without adding many carbs or fat.
Glaze ingredients:
- Greek yogurt
- Cocoa powder
- Sweetener to taste
- Milk of choice (optional, to thin)
How to make keto blueberry cake
This cake is straightforward and quick. You’ll need just one mixing bowl and a small baking dish. The total active time is minimal, and the bake time is short, so you can enjoy a warm, single-serve cake within half an hour.
Step 1. Preheat the oven to 180°C (350°F). In a mixing bowl, combine the dry ingredients: coconut flour, protein powder, cocoa powder, granulated sweetener and baking powder. Whisk briefly to break up any lumps.
Step 2. Add the wet ingredients: 1 egg, 2 egg whites (or 1 whole egg if preferred), Greek yogurt and the milk of your choice. Stir until a smooth batter forms, then gently fold in the blueberries. If using frozen berries, there is no need to thaw; fold them in carefully to avoid turning the batter purple.
Step 3. Prepare a small round baking dish (about 12 cm / 4.7 inches diameter) by lining it with parchment paper or greasing it lightly so the cake releases easily. Transfer the batter to the dish and smooth the top. Bake in the preheated oven for 20–25 minutes; the center should be set and a toothpick inserted in the middle should come out mostly clean. My cake took 23 minutes.
How to make protein chocolate glaze
While the cake cools, prepare the glaze. In a small bowl, whisk together Greek yogurt, cocoa powder and sweetener to taste. If the glaze is too thick, add a splash of milk and mix until you reach a spreadable consistency. Once the cake has cooled slightly, spread the glaze over the top.
FAQ – Frequently asked questions
- Which protein powder is best? A vegan chocolate-flavored protein powder (such as pea protein) works well. You can also use casein or whey; note that whey may absorb less liquid and can produce a slightly drier cake, so you may need to reduce the powder or add a touch more milk.
- Can I replace the protein powder? Yes. Almond flour or oat flour can be used as alternatives, though quantities or liquid amounts may need slight adjustment to reach the right batter consistency.
- Can I replace the egg whites? Yes. Substitute the two egg whites with one whole egg if you prefer an easier option.
- Can I make this dairy-free? Yes. Use a firm plant-based yogurt instead of Greek yogurt and choose a nondairy milk to keep the cake dairy-free while still moist.
- Can I prepare this cake ahead? Yes. After baking and cooling, wrap the cake and store it at room temperature for up to three days. For longer storage, refrigerate and bring to room temperature before serving.
- Can I scale the recipe for more servings? Yes. Increase all ingredients proportionally and use a larger baking dish or split the batter into multiple ramekins. Adjust baking time as needed for a larger or deeper cake.
Notes
This version was tested with chocolate-flavored pea protein. If you swap to another protein type (vegan, casein, or whey), expect minor differences in texture and moisture. Adjust milk gradually to achieve a batter that is smooth but not runny.
Nutrition (per serving)
Estimated values for one cake: approximately 370 kcal, 48 g protein, 16.7 g carbohydrates, 12 g fat, and around 12 g fiber. Exact numbers will vary depending on brands and substitutions.