Thank you for being here — truly. Recipes like this High Protein Vanilla Donut Cake are why I love baking with intention. It has that soft, nostalgic donut texture we all crave, but it’s baked instead of fried and powered by oat flour, Greek yogurt, and protein powder.
This is the kind of cake I make on a quiet weekend morning, slice into squares, and enjoy all week with coffee. It’s simple, lightly sweet, and incredibly satisfying without being heavy. If you love protein-packed bakes that still feel like a treat, be sure to subscribe by email so you don’t miss what’s coming out of my oven next
Overview of Recipe Content
What Is a High Protein Vanilla Donut Cake?
It’s a one-pan baked cake inspired by classic vanilla donuts. Instead of frying, this version is baked in a square pan and enriched with protein powder and Greek yogurt for a tender crumb and balanced nutrition.
Why You’ll Love This Recipe
- High in protein
- Soft, donut-like texture
- Naturally sweetened
- Easy one-bowl recipe
What Does It Taste Like?
Light vanilla flavor, fluffy and moist like a cake donut, with a clean sweetness that pairs beautifully with coffee or tea.
Ingredients
For the Vanilla Donut Cake
- 1½ cups oat flour
- 1 scoop vanilla protein powder
- 1½ teaspoons baking powder
- Pinch of salt
- 2 large eggs
- ⅓ cup honey or maple syrup
- ½ cup plain Greek yogurt
- ⅓ cup milk (dairy or non-dairy)
- 1 teaspoon vanilla extract
Optional Vanilla Glaze
- ½ cup powdered sugar
- 1–2 tablespoons milk
- ½ teaspoon vanilla extract
Tools Needed
Substitutions & Additions
- Use plant-based protein powder if needed
- Swap oat flour for almond flour (slightly denser)
- Add cinnamon or nutmeg for warmth
- Sprinkle with powdered sugar instead of glaze
How to Make High Protein Vanilla Donut Cake
Step 1: Prep
Preheat oven to 350°F (175°C). Line or grease an 8×8-inch pan.
Step 2: Mix Dry Ingredients
In a bowl, whisk oat flour, protein powder, baking powder, and salt.
Step 3: Mix Wet Ingredients
In another bowl, whisk eggs, honey (or maple syrup), Greek yogurt, milk, and vanilla.
Step 4: Combine
Add wet ingredients to dry and stir gently until smooth.
Step 5: Bake
Pour batter into pan and smooth the top. Bake 30–35 minutes, until a toothpick comes out clean.
Step 6: Glaze (Optional)
Whisk glaze ingredients and drizzle over slightly warm cake.
What to Serve with Vanilla Donut Cake
- Hot coffee or cappuccino
- Fresh berries
- Greek yogurt
- A light dusting of powdered sugar
Tips for Making It Perfect
- Don’t overmix the batter
- Use fine oat flour for best texture
- Let cake cool slightly before slicing
- Glaze while warm so it melts in
Storage Instructions
- Store covered at room temperature 2 days
- Refrigerate up to 5 days
- Freeze individual slices up to 2 months
- Reheat gently before serving
General Information
Baked donut cakes are inspired by classic cake donuts but skip the frying step. Adding protein powder and Greek yogurt boosts nutrition while keeping the crumb tender and satisfying.
Frequently Asked Questions
Is this cake very sweet?
No — it’s lightly sweet and balanced.
Can I make it gluten-free?
Yes, use certified gluten-free oat flour.
What protein powder works best?
Vanilla whey or plant-based both work well.
Can I double the recipe?
Yes — bake in a 9×13-inch pan.
Conclusion
This High Protein Vanilla Donut Cake baked in a square pan is simple, nourishing, and endlessly versatile — perfect for breakfast, snacks, or a light dessert. If you enjoyed this recipe, you’ll also love:
- Healthy Cinnamon Roll Donut Cake
https://poulef.com/cinnamon-roll-donut-cake/ - Banana Protein Muffins
https://poulef.com/banana-protein-muffins/ - Vanilla Snack Cake
https://poulef.com/vanilla-snack-cake/ - Protein Brownie Squares
https://poulef.com/protein-brownies/ - Greek Yogurt Breakfast Cake
https://poulef.com/greek-yogurt-cake/
Interactive Elements
Did you bake this donut cake? Leave a review
Share your slices on Pinterest and tag me https://www.pinterest.com/poulefrecipe/
Nutritional Information (Per Slice – Approximate)
| Nutrient | Amount |
|---|---|
| Calories | 210 |
| Fat | 5g |
| Saturated Fat | 2g |
| Carbs | 28g |
| Sugar | 12g |
| Protein | 10g |
| Fiber | 3g |
High Protein Vanilla Donut Cake Baked in a Square Pan
- Total Time: 45 minutes
- Yield: 9 slices 1x
- Diet: Vegetarian
Description
High Protein Vanilla Donut Cake is a soft, baked cake donut made with oat flour, Greek yogurt, and vanilla protein powder. Naturally sweetened and baked in a square pan.
Ingredients
1½ cups oat flour
1 scoop vanilla protein powder
1½ teaspoons baking powder
Pinch of salt
2 large eggs
⅓ cup honey or maple syrup
½ cup Greek yogurt
⅓ cup milk
1 teaspoon vanilla extract
Instructions
1. Preheat oven to 350°F and prepare pan.
2. Whisk dry ingredients together.
3. Mix wet ingredients in a separate bowl.
4. Combine wet and dry until smooth.
5. Pour batter into pan.
6. Bake 30–35 minutes.
7. Cool slightly before slicing.
Notes
Do not overmix.
Use fine oat flour.
Glaze while warm if desired.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Category: Breakfast
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 slice
- Calories: 210
- Sugar: 12g
- Sodium: 180mg
- Fat: 5g
- Saturated Fat: 2g
- Unsaturated Fat: 3g
- Trans Fat: 0g
- Carbohydrates: 28g
- Fiber: 3g
- Protein: 10g
- Cholesterol: 55mg
Table of Contents
Gianna Poulef
I’m Gianna Poulef from Poulef Recipes. I love sharing perfected dishes from my kitchen. I’m sure they’ll earn a spot in your heart. Let’s savor this journey together!.
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