Place entire package of strawberries in a strainer over a saucepan and let set for fifteen minutes until all the juices run into the pan. You should have 2/3 cup of juice.
Bring this juice to a boil and remove from stove. Slowly stir in Jell-O and continue stirring until dissolved. Add the strawberries and any juice that may be left.
Pour half of the mixture into a small Jell-O mold and refrigerate. When hardened spread sour cream over the top. Gently pour remaining strawberry Jell-O mixture over the sour cream and refrigerate. Unmold and enjoy.