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How to Adjust the Moisture in a Yellow Cake Mix by Using Bananas

by Julie Christensen

Most yellow cake mixes require the additions of vegetable or canola oil as well as water to help make the cake moist. You can tinker with the basic mix to inject even more flavor and moisture into your cake by adding fruits such as banana or applesauce. Skip firm, yellow bananas; they won't mash well and can give an "off" flavor and dry texture to cakes. You want bananas that are so ripe that you wouldn't eat them fresh.

The Perks of Going Bananas

Pureed bananas, as well as other fruit and vegetable purees, are rich in moisture, so adding them to a yellow cake mix can create a moister, more tender cake. Banana puree can even stand in for some of the oil, for a cake that's healthful and delicious. Substitute no more than half the oil with banana puree.

Mash It Up

Select only very ripe bananas to use in a yellow cake. The peels should be dark brown, but the bananas should not be oozing liquid or have an alcohol odor, which indicates that they're spoiled. Peel the bananas and smash them with a fork in a bowl until they're evenly mashed. You can also toss them in a blender for a more uniform consistency. Add the bananas to the cake mix when you add the oil and water. Mix with a hand mixer for 1 to 2 minutes and bake in an oven set at 350 degrees Fahrenheit for 25 minutes, or until the cake springs back lightly when you touch it.

Flavor Sensations

Not only do pureed bananas add moisture to a cake, but they also add flavor. Use two to four bananas to transform your yellow cake into a banana cake; serve with cream cheese frosting for a classic dessert. To add moisture without the concentrated banana flavor, use no more than one small banana. Even then, you may detect a slight banana flavor. Add the bananas in addition to the oil, water and eggs called for in your method. If you wish to use the bananas instead of some of the oil, use 1/2-cup banana puree for every 1-cup oil.

Handy Substitutes

Bananas aren't the only product that can add moisture to a yellow cake mix. For an even better flavor and texture, add a few tablespoons of yogurt, sour cream or instant vanilla pudding mix in addition to the pureed banana, oil, water and eggs. If you want moisture without the banana flavor, try applesauce instead. Applesauce has a mild flavor, which is barely discernible in a cake. It can stand in for some of the oil at a ratio of 1-part applesauce to 2-parts oil.

About the Author

Julie Christensen is a food writer, caterer, and mom-chef. She's the creator of MarmaladeMom.org, dedicated to family fun and delicious food, and released a book titled "More Than Pot Roast: Fast, Fresh Slow Cooker Recipes."

Photo Credits

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