You can turn any sheet cake into a showstopper — zero experience necessary. ... or freeze-dried raspberries for pink. ... 10 Cake-Decorating Tips. Finish with flowers.

Cooking spray. 2 1/2 c. cake flour. 1 tbsp. baking powder. 3/4 tsp. kosher salt. 1 1/4 c. granulated sugar. 2 tbsp. finely grated lemon zest, plus 1 tablespoon lemon juice ...

For the cake: Spray a 12-by-18-inch rimmed baking sheet with cooking spray. Preheat the oven to 350 ̊. Whisk the flour, baking powder and salt in a large bowl.