To prepare a strawberry angel shortcake cake recipe, first you need to prepare the cake batter. First, you will need the following ingredients: butter, sugar, eggs, vanilla, and vanilla extract. You can find these ingredients at your local grocery store. Then, add the flour, baking powder, salt and baking soda to the wet ingredients and mix until the ingredients are well combined. Next, pour the batter into the prepared cake pan and bake it for 20 minutes at 350 degrees F.