Lemon Banana Cake with Royal Baking Powder
Ayaba da lemon tsami is a vibrant West African layer cake that combines the bright acidity of fresh lemon with the natural sweetness and moisture of ripe bananas. This version uses Royal baking powder for reliable rise and a tender crumb. The cake features a straightforward creaming method: sugar and eggs beaten until pale, then folded with mashed banana, lemon juice and zest, sunflower oil, and dairy before dry ingredients are incorporated. The result is a naturally flavored cake with citrus notes cutting through banana's richness and an open, tender texture. Perfect for celebrations, tea time, or weekend baking, this cake suits home bakers of any level. Serve it plain, dusted with powdered sugar, or frosted for special occasions. The Nigerian preparation honors traditional methods while delivering consistent results.
Ingredients
- ⅝ cups sugar
- 2 whole eggs
- 4 tbsp dairy (milk or buttermilk), impliedbuttermilk1:1dairytangier
buttermilk adds subtle tang and lighter crumb; acidic interaction with baking powder improves rise
Full guide → - 6 ½ tbsp sunflower oil
- 1 whole banana, mashed with lemon juice and waterapplesauce0.75:1fruitlighter
applesauce reduces moisture slightly; use 150g applesauce plus 2 tablespoons lemon juice to match acid and flavor
Full guide → - salt, pinch
- 2 whole bananas, choppedapplesauce0.75:1fruitlighter
applesauce reduces moisture slightly; use 150g applesauce plus 2 tablespoons lemon juice to match acid and flavor
- 2 cups flour
- ⅓ oz Royal baking powderbaking powder1:1leavening
Royal is baking powder with added cornstarch for stability; straight baking powder works but may cause slight spreading
Instructions
- 1
Blend sugar in a food processor for 10 seconds, then run for 10 seconds more.
- 2
Add eggs, dairy, sunflower oil, lemon juice, lemon zest, salt, and chopped bananas. Blend for 30 seconds, then run for 5 seconds.
- 3
Add flour and Royal baking powder. Blend for 10 seconds, then run for 5 seconds.
- 4
Pour batter into a prepared round pan approximately 22 centimeters in diameter.
- 5
Bake at 180 degrees until golden and a skewer inserted in the center comes out clean, about 45 minutes.
Tips
Blend sugar alone first to create fine crystals that cream better with eggs, yielding a lighter, more stable batter and finer crumb structure in the finished cake.
Use very ripe bananas with brown spots for maximum natural sweetness and moisture; underripe bananas lack flavor and will dry out the cake.
Do not overblend after adding flour and baking powder; stop immediately after the final run to avoid overdeveloping gluten, which toughens the cake.
Good to Know
Keep covered at room temperature up to 3 days, or refrigerate up to 5 days. Wrap well to prevent drying.
Batter can be prepared and refrigerated up to 4 hours before baking; bake from cold, adding 5-10 minutes. Baked cake freezes well for up to 3 months wrapped tightly.
Serve at room temperature, dusted with powdered sugar, or frosted with cream cheese or buttercream. Pairs well with tea, coffee, or milk.
Common Mistakes
Do not skip the initial solo blending of sugar to avoid dense, heavy crumb and poor rise.
Do not overmix after adding flour and baking powder to prevent tough, rubbery texture.
Do not use underripe bananas to avoid dry cake and weak banana flavor.
Substitutions
Dairy-Free Swaps
buttermilk adds subtle tang and lighter crumb; acidic interaction with baking powder improves rise
Full guide →butter adds richness and slight tang; reduces moisture slightly
Full guide →General Alternatives
Royal is baking powder with added cornstarch for stability; straight baking powder works but may cause slight spreading
applesauce reduces moisture slightly; use 150g applesauce plus 2 tablespoons lemon juice to match acid and flavor
Full guide →FAQ
Can I make this cake without a food processor?
Yes. Cream sugar and eggs with a mixer or by hand until pale and fluffy (3-5 minutes). Mash bananas separately, then fold together with oil, dairy, lemon, and salt. Sift flour and baking powder, then gently fold into wet ingredients until just combined.
What if I don't have Royal baking powder?
Use standard baking powder at a 1:1 ratio. Royal contains added cornstarch for humidity resistance; standard baking powder will work but may cause slight spreading in humid kitchens. For best results, add 1 gram of cornstarch to compensate.
How long does this cake keep, and can I freeze it?
Keep covered at room temperature up to 3 days or refrigerated up to 5 days. The cake freezes well wrapped tightly for up to 3 months. Thaw at room temperature before serving. Frosted cakes freeze best if frosted after thawing.