High-Protein Cake That Fits Your Diet (Yes, Really!)

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Cake? On a Diet?
Yes, You Can Have Your Cake and Eat It Too.

Let’s be honest—sticking to a diet isn’t easy. If you’ve ever found yourself craving something sweet while trying to hit your macros, this high-protein cake recipe is about to become your new best friend. It’s simple to prep, packed with protein, and totally adaptable for cutting or bulking phases. Oh, and did we mention it actually tastes good?

Whether you’re smashing the gym daily or just trying to eat cleaner, protein intake is essential for muscle recovery and growth. But hitting your daily protein goal can feel like a chore. A good rule of thumb? Aim for 10 grams of protein for every 100 calories. So if you’re on a 2,000-calorie plan, try to hit around 200g of protein per day. This cake makes it easier—and tastier.

Why This Protein Cake Works for Your Goals

Unlike most supermarket protein bars that are full of sugar alcohols, preservatives, and mystery ingredients, this cake is:

  • Whole-food based

  • Customisable for flavour and macros

  • Budget-friendly

  • Quick and easy to prep

  • Perfect as breakfast, a snack, or dessert

Pair it with a dollop of Greek yogurt in the morning or snack on it post-workout—either way, your tastebuds and muscles will thank you.

The Base Recipe: Protein Mafia Power Cake

Ingredients (4 servings):

  • 60g oat flour (or blended oats if you’re in a pinch)

  • 60g Protein Powder of your choice (examples here)

  • 15g baking powder

  • 200ml milk (we recommend lactose-free if you’re sensitive)

  • Optional for rise: 1–2 eggs (plant-based powders usually need 2)

Optional Flavour Combos:

🔵 Blueberry Vanilla Cake (on the left in photo below):

  • 120g blueberries

  • A few drops of blueberry flavouring

  • A dash of vanilla essence

🍫 Chocolate Marshmallow Cake (on the right in photo below):

  • 20g cocoa powder

  • 15 mini marshmallows

  • A splash of vanilla essence

Directions:

  1. Preheat your oven to 180°C (350°F).

  2. Mix all the dry ingredients in a bowl.

  3. Add the eggs, milk, and flavourings.

  4. Stir until smooth (a hand mixer or whisk works great).

  5. Pour into a cake tin or oven-safe dish and bake for 15–20 minutes until cooked through.

  6. Let cool, slice into 4 portions, and enjoy!

Macros (Blueberry Version):

  • Total Calories: 736

  • Protein: 75g

  • Carbs: 75g

  • Fat: 17g

  • Per Portion (¼ Cake, 1 cake in the photo above is a serving ¼):

    • ~184 calories

    • ~19g protein

    • ~19g carbs

    • ~4g fat

Customise for Your Goals

Cutting? Use one egg, low-fat milk, and leaner protein powder.
Bulking? Add peanut butter, extra oats, or swap milk for full-fat dairy.
Vegan? Use flax eggs and our plant-based Protein Mafia powders.

This recipe is a game-changer no matter your fitness goals. It’s portable, satisfying, and won’t wreck your macros—plus, it kills sweet cravings without the guilt.

Boost the Flavour with Protein Mafia Powders

The real magic? Your choice of protein powder. Some of our top picks for this cake recipe:

  • Chocolate Fudge Whey Isolate – rich, creamy, and great in the marshmallow version.

  • Vanilla Ice Cream Plant Protein – smooth, versatile, and perfect with fruit.

  • Strawberry Cheesecake Whey – add some berries for the ultimate combo.

👉 Shop all Protein Mafia Powders here

our selection of protein powders

Send Us Your Cake Creations & Win Free Protein!

We want to see your creations! Try this recipe, snap a photo, and tag us @proteinmafiauk or use #ProteinMafiaCake on Instagram. Tell us what flavour combo you used and what Protein Mafia powder you went for.

Each month, we’re giving away:

  • A FREE tub of protein

  • A Protein Mafia shaker

  • Bragging rights, obviously 💪

Still eating dry chicken breast every meal? Switch it up.
Try the Protein Mafia Protein Cake today and finally have a dessert that works with your fitness, not against it.

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