To prepare a classic strawberry shortcakes recipe, first you need to prepare the ingredients. First, you'll need 2 cups fresh strawberries, 1 cup sugar, and 1 tablespoon vanilla extract. You can also use frozen strawberries if you don't have fresh ones on hand. Then, preheat the oven to 350?F (180?C) and prepare your oven rack to line the bottom and the top of the cake pan with parchment paper. Place the sliced strawberries in the prepared pan and bake for 20 to 25 minutes, or until the strawberries are soft. Remove the pan from the heat and let cool for 5 minutes before serving.