Sift the all-purpose flour and baking powder together.
Make sure the kneading blades are properly attached to the baking pan.
Add the cake ingredients to the baking pan in the order listed (wet ingredients first, then sugar/zest, then the sifted dry ingredients). Do not add the glaze yet.
Place the pan in the machine, close the lid, and plug it in.
Press COURSE and select COURSE 13 (CAKE). Set crust to MEDIUM. Press START.
When the "add" beeps sound, open the lid carefully and use a rubber spatula to scrape down any flour stuck to the sides of the pan. (Be careful of the moving blades.) Close the lid and press START to resume if needed.
When baking finishes, press CANCEL. Remove the pan with oven mitts, turn the cake out onto a cooling rack, and let it cool completely.
Make the glaze: Whisk powdered sugar and lemon juice until smooth. Spread or drizzle over the cooled cake.