Hi. I made the recipe below in a 9x13" pan and it came out just perfect. The only change I made was butter for shortening. Anyway, I plan to double the recipe and make a 1/2 sheet cake, using a 16 x 10 x
2" pan. Actually, the bottom of the pan lists the dimensions as 17 1/4 x 11 3/8 x 2 1/4, I guess because the slides slope up and their dimensions come from the top and mine from the bottom. But what I really want to know is, how should I adjust the baking time? 45 minutes worked great for the 1/4 sheet, but what would I do for a 1/2 sheet? All opinions appreciated. Thanks a ton.1 cup shortening
2 cups white sugar 4 eggs 2 teaspoons vanilla extract 2 3/4 cups all-purpose flour 3 teaspoons baking powder 1 teaspoon salt 1 3/4 cups milkDIRECTIONS: Preheat oven to 350 F. Grease and flour one 9 x 13" pan. Cream together shortening and sugar. Beat in eggs and vanilla. In a separate bowl, combine flour, baking powder, and salt. Add to creamed mixture alternately with milk. Mix well. Pour batter into prepared pan. Bake for 45 minutes, or until cake tests done. Cool.