Healthy Banana Cake Bars with Frosting
Soft, fluffy, and topped with a creamy chocolate frosting—these low-calorie banana cake bars taste like dessert but are made with better-for-you ingredients.
Why You’ll Love These Banana Cake Bars
If you’re looking for a sweet treat that feels indulgent but fits your goals, these banana cake bars are it.
Only 110 calories per bar
7g protein each
Naturally sweetened with banana
Made in one bowl
Perfect for meal prep or a quick snack
They’re soft, moist, and topped with a rich chocolate frosting made from Greek yogurt—no heavy buttercream needed.
What Makes These “Healthy”
These bars use simple swaps to keep them lighter without sacrificing flavor:
Bananas + applesauce instead of lots of oil
Greek yogurt for moisture + protein
Protein powder for a boost
Light, creamy yogurt-based frosting
You still get that classic cake texture—just with better ingredients.
Nutrition (Per Bar – 9 Total)
Calories: 110
Protein: 7g
(Will vary slightly based on protein powder and sweetener used)
Tips for Best Results
Use very ripe bananas for the best flavor
Let bars cool completely before frosting
Chill before slicing for cleaner cuts
Don’t over bake—keeps them soft and moist
Storage
Store in the fridge for up to 5 days
Freeze unfrosted bars for up to 2 months
Easy Variations
Add chocolate chips to the batter
Swap cocoa frosting for peanut butter drizzle
Use flavored protein powder for a twist
Storage
Store in the fridge for up to 5 days
Freeze unfrosted bars for up to 2 months
Easy Variations
Add chocolate chips to the batter
Swap cocoa frosting for peanut butter drizzle
Use flavored protein powder for a twist
These banana cake bars are the perfect balance of healthy and indulgent. Whether you need a quick snack, a light dessert, or something to meal prep for the week, they check all the boxes.
Ingredients
Banana Cake Bars
2 ripe bananas (about 200g mashed)
1/2 cup nonfat Greek yogurt
1/4 cup applesauce
1 egg
1 teaspoon vanilla
3/4 cup all-purpose flour
1/4 cup protein powder
1 teaspoon baking powder
1/2 teaspoon baking soda
Pinch of salt
Chocolate Yogurt Frosting
1/2 cup nonfat Greek yogurt
2 tablespoons cocoa powder
2–3 tablespoons maple syrup or powdered sugar
1/2 teaspoon vanilla
When to Enjoy These Banana Cake Bars
These bars are super versatile, which makes them perfect to keep on hand throughout the week.
Breakfast on-the-go: Pair with coffee for a quick, balanced start
Post-workout snack: The protein + carbs help with recovery
Afternoon pick-me-up: Light, satisfying, and not overly heavy
Healthy dessert: A great way to satisfy a sweet craving without going overboard
Because they’re lower in calories and higher in protein, they fit easily into a variety of routines—whether you’re focused on balance, fat loss, or just adding more nutrient-dense options to your day.
Common Mistakes to Avoid
To get the best texture and flavor, here are a few things to watch out for:
Overmixing the batter
This can make the bars dense instead of soft and cake-like. Mix just until combined.Using underripe bananas
Ripe bananas add natural sweetness and moisture—don’t skip this!Overbaking
These bars can dry out quickly. Check around 18 minutes and remove once a toothpick comes out clean.Frosting too early
If the bars are still warm, the yogurt frosting will melt. Let them cool completely first.Skipping parchment paper
This makes removal and slicing much easier (and cleaner!).
How to Make Banana Cake Bars
1. Prep
Preheat oven to 350°F and line an 8x8 pan with parchment paper.
2. Mix Wet Ingredients
In a large bowl, mash the bananas until smooth.
Add Greek yogurt, applesauce, egg, and vanilla. Mix until combined.
3. Add Dry Ingredients
Stir in flour, protein powder, baking powder, baking soda, and salt.
Mix until just combined—don’t overmix.
4. Bake
Pour batter into the pan and smooth evenly.
Bake for 18–22 minutes, or until a toothpick comes out clean.
Let cool completely before frosting.
5. Make the Frosting
In a bowl, mix Greek yogurt, cocoa powder, sweetener, and vanilla until smooth.
6. Frost & Slice
Spread frosting over cooled bars and cut into 9 squares.
