You can really cheat with this “homemade” cake and begin with a store-bought angel food cake - or buy an angel food cake mix. Adorn it with fresh berries for a summer birthday. This is one cake that usually disappears during the party. Bake and cool one angel food cake according to directions. Remove from pan and slice crosswise into 3 layers. Spread frosting between each layer and cover sides and top of cake with it. Chill before cutting.
In a mixing bowl stir gelatin into hot water and continue stirring until dissolved. Stir in raspberry jam. When partially set, whip the cream and fold into jam.