Preheat the oven to 350F. Spray four ramekins with the non stick butter spray.

Add the strawberries, egg yolk, cream and sweetening syrup to a food processor. Blend until smooth.

In a stand mixer, whisk the egg whites and salt until stiff peaks have formed. Fold the strawberry mixture carefully into the egg whites.

Divide the mixture between the ramekins, and place them in a baking dish. Bake for 10 minutes (without opening the door) until they have puffed up and have started to turn brown on top.

Serve immediately.