To a small saucepan add fresh or frozen strawberries and sugar.
Bring mixture to a boil (it will create its own juices) constantly stirring to get all of the strawberries soft (3-4 mins)
Combine 1 tablespoon of cornstarch with 1 tablespoon water.
Mix well creating a slurry.
Pour into strawberry topping mixture and stir until smooth.
Increase the heat to bring mixture to a boil. Stir and remove to cool.