Cake Batter

• 195 gms – 1 ½ cups flour sifted
• 2 tsp baking powder sifted
• ¼ tsp salt
• 113 gms – ½ cup unsalted butter at room temperature
• 200 gms – 1 cup granulated sugar
• 1 tbsp vanilla extract
• 2 large eggs at room temperature separated
• 120 ml – ½ cup whole milk
• ¼ tsp cream of tartar

Topping

• 55 gms – 4 tbsp unsalted butter cut in small pieces
• 160 gms – ¾ cup dark brown sugar
• ½ tsp cinnamon powder
• 1/8 tsp ground nutmeg
• A dash of ground cloves pinch
• ¼ tsp vanilla extract
• 2 large ripe but firm bananas peeled, strings removed, sliced diagonally – 0.6 cm or 1/4 inch thick