Heat the oven to 350 degrees F. Grease a 9 x 13-inch pan.
In a small bowl, combine the gelatin and the strawberries with their liquid.
Sprinkle the marshmallows evenly across the bottom of the prepared pan.
Sift together the flour, baking powder and salt.
In the large bowl of an electric mixer, cream the sugar and butter, beating
until the mixture is light and fluffy.
Beat in the eggs, one at a time, beating
well after each. Beat in the vanilla extract.
Beat in the flour mixture in thirds, alternating with the milk, beating
well after each and scraping the bowl well between additions. Pour the mixture
over the marshmallows, gently spreading it edge to edge.
Spread the gelatin-strawberry mixture over the cake batter.
Bake for 40 to 50 minutes, until a wooden pick inserted in the center comes
Serve either cake-side up or berry-side up, topped with whipped cream and
garnished with strawberries, if desired.