1. Line the bottom of a 9 x 13 inch cake pan with parchment paper. Set aside. 2. Preheat oven to 350°. 3. In a bowl, combine flour, baking powder, and salt. Reserve. 4. In a mixing bowl for an ...

Add Yahoo as a preferred source to see more of our stories on Google. Slice of vanilla cake with white frosting on pink tablecloth - Nata_vkusidey/Getty Images When looking for boxed cake mixes at the ...