Fat Free Banana Cake Recipe: Moist and Flavorful Without the Butter

Achieving a moist cake without fat is possible with the right technique. This recipe replaces traditional oil or butter with natural substitutes that maintain texture and richness.

You’ll use everyday ingredients and simple methods to create a tender, flavorful cake. The result is a dessert that satisfies without compromising on taste or quality.

Ingredients for Fat Free Banana Cake

Everyday pantry staples create this surprisingly moist cake without added fat.

The bananas are crucial here. Use the black-spotted ones—the riper, the better. They provide natural sweetness and moisture, which is essential in a fat-free recipe. Most grocery stores have ripe bananas at a discount. For the applesauce, Mott’s Unsweetened works well, but any brand without added sugar will do. The buttermilk adds tang and tenderness—Low-fat works perfectly in this application.

No buttermilk? Low-fat yogurt thinned with a splash of milk gets you close. Want a vegan version? Replace eggs with flax eggs (1 tbsp ground flax + 3 tbsp water per egg). For extra moisture, add 1-2 tbsp Greek yogurt. The cinnamon can be swapped for nutmeg or allspice if you prefer. The applesauce is non-negotiable for fat replacement—don’t skip or substitute.

This cake stays moist for 3-4 days at room temperature in an airtight container. For longer storage, refrigerate for up to 1 week or freeze slices for 3 months. Bring to room temperature before serving for best texture and flavor.

Step-by-Step Instructions for Fat Free Banana Cake

Here is the tested method that ensures a moist, tender crumb without any added fat.

Step 1: Prepare the Wet Ingredients

In a large mixing bowl, mash the 3 whole Ripe Bananas until smooth with only a few small lumps remaining. I use a fork for this—it gives me better control than a whisk. The bananas should be very ripe, with plenty of brown speckles, as this ensures maximum natural sweetness and moisture.

Add the 1 cup Granulated Sugar, 0.5 cup Light Brown Sugar, 2 whole Large Eggs, 0.75 cup Unsweetened Applesauce, and 2 tsp Vanilla Extract. The applesauce is critical here—it replaces the fat while keeping the cake incredibly moist. Whisk everything together until fully combined and smooth.

Step 2: Combine the Dry Ingredients

In a separate bowl, sift together the 2 cups All-Purpose Flour, 2 tsp Baking Powder, 0.5 tsp Baking Soda, 1 tsp Ground Cinnamon, and 0.5 tsp Salt. Sifting the flour prevents lumps and ensures an even distribution of leavening agents, which is especially important in a fat-free batter.

I always measure my baking powder and baking soda carefully—too much can cause the cake to rise too quickly and then collapse. The cinnamon adds warmth, while the salt balances the sweetness of the sugars and bananas.

Step 3: Fold and Incorporate the Batter

Gradually add the dry ingredients to the wet mixture, about ½ cup at a time, folding gently with a silicone spatula just until the flour disappears. Overmixing will develop gluten, leading to a dense, tough cake instead of a light, tender one.

Alternate with the 0.5 cup Low-Fat Buttermilk, beginning and ending with the dry ingredients. The buttermilk adds tanginess and extra moisture, while its acidity reacts with the baking soda for a better rise. Stop mixing as soon as the batter is smooth—small lumps are fine and will dissolve during baking.

Step 4: Bake to Golden Perfection

Pour the batter into a prepared 9-inch round cake pan lined with parchment paper. Smooth the top with the spatula. Preheat your oven to 350°F and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.

Check for doneness at the 30-minute mark—the top should be golden brown and spring back lightly when touched. If the toothpick has wet batter, return it to the oven for another 3-5 minutes. Avoid opening the oven door too early, as sudden temperature drops can cause the cake to sink.

Step 5: Cool and Serve

Let the cake cool in the pan for 10 minutes, then transfer it to a wire rack to cool completely. This step prevents the cake from becoming soggy as steam escapes. The texture will be at its best once fully cooled—moist, tender, and lightly spiced.

Slice with a serrated knife for clean cuts. This cake keeps well covered at room temperature for 2 days or refrigerated for up to 5 days. For the best flavor, serve slightly warm with a dusting of powdered sugar or a light glaze.

Essential Equipment for Perfect Results

Mixing Bowls

I recommend using a large stainless steel mixing bowl for the wet ingredients—it provides stability while mashing bananas and whisking. A second medium bowl for dry ingredients keeps things organized. My Cuisinart stainless set has served me well for years.

Measuring Tools

Accurate measurements are crucial for this recipe. I use OXO Good Grips measuring cups and spoons for consistency. A kitchen scale helps with the flour—240 grams equals 2 cups if you prefer weight over volume.

Whisk and Spatula

A sturdy balloon whisk blends the wet ingredients smoothly without overworking them. For folding dry ingredients, a silicone spatula scrapes every bit of batter from the bowl. I love my GIR brand spatulas—they’re heat-resistant and flexible. 💛

Cake Pan

Use a 9-inch round cake pan with 2-inch sides for proper rise. I line mine with parchment paper for easy release. A dark nonstick pan from Wilton ensures even browning without burning.

Cooling Rack

Invest in a wire cooling rack to prevent sogginess as the cake cools. Elevating it allows air circulation underneath. My Chicago Metallic rack fits perfectly over my sink for easy cleanup.

Testing Tools

Check doneness with wooden toothpicks or a cake tester. I also use an instant-read thermometer—200°F internal temperature confirms it’s done. Avoid overbaking, as fat-free cakes can dry out quickly. 🌡️

Frequently Asked Questions