Spiced Banana Upside Down Cake – Bolo de Banana

Cake Batter

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

Topping

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