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Cinnamon Swirl Protein Cake — Low Carb, High Protein Treat Recipe

5 from 124 reviews

This Cinnamon Swirl Protein Cake is a deliciously low-calorie, low-carb, and high-protein treat perfect for a nutritious snack or dessert. It combines rolled oats, vanilla protein powder, and a fragrant cinnamon swirl baked into a moist, pancake-like cake. Easy to prepare in under 20 minutes, this cake is ideal for those seeking a healthy yet flavorful indulgence.

Ingredients

Scale

Batter

  • ½ cup rolled oats (~45 g)
  • 2 egg whites (~60 g total)
  • ⅔ cup water (≈160 ml)
  • 2 scoops vanilla protein powder (~2 oz / ~57 g)
  • 1 teaspoon powdered Stevia (or your preferred sweetener)
  • 1 teaspoon baking powder (~45 g)
  • 1 tablespoon ground cinnamon (~8 g) — for the swirl

Instructions

  1. Preheat Oven and Prepare Pan: Heat the oven to 390°F (200°C). Lightly grease a small nonstick pan approximately 4–4.5 inches (10–11 cm) across to prevent sticking during baking.
  2. Make the Batter: Combine the rolled oats, egg whites, water, vanilla protein powder, Stevia, and baking powder in a blender or food processor. Blend until the mixture is smooth and thick, resembling hearty pancake batter.
  3. Layer and Swirl Cinnamon: Pour about half the batter into the prepared pan. Sprinkle the tablespoon of ground cinnamon evenly over this layer. Then, spoon the remaining batter on top. Using a knife, drag through the batter gently a few times to create visible cinnamon ribbons without over-mixing.
  4. Bake: Place the pan in the preheated oven and bake for approximately 12 minutes. The cake is done when the top springs back slightly and a toothpick inserted near the center comes out mostly clean.
  5. Rest and Serve: Allow the cake to cool in the pan for a couple of minutes. Slice and enjoy warm or at room temperature as a satisfying high-protein treat.

Notes

  • Pan Size Matters: This recipe is optimized for a small pan. Using a larger pan without adjusting baking time may result in an undercooked center.
  • Protein Powder Choice: Use a vanilla-flavored protein powder that bakes well to avoid a gritty texture. If the first attempt is chalky, try another brand.
  • Texture Tweaks: For a richer crumb, replace part of the water with milk (dairy or unsweetened plant milk).
  • Sweetener Options: Powdered Stevia is ideal for low-carb versions, but erythritol, monk fruit, or regular sugar can also be used depending on dietary preferences.

Keywords: Cinnamon swirl protein cake, low calorie dessert, high protein cake, low carb cake, healthy cake recipe, quick protein treat, baked protein cake