Using underripe bananas can result in a drier texture, so ensure they are fully ripe with brown spots. 2. Packing the flour instead of measuring it by spooning it into the measuring cup, will yield too much create a dense and dry cake. 3. Overmixing the batter can overdevelop the gluten and impact the cake's moistness. Take care to use room temperature ingredients for easy mixing and stop as soon as the ingredients are combined.