Step 1

Add the water and cornstarch to a large saucepan. Whisk briskly until combined. (No heat is needed during this step.)

Step 2

Add the strawberries and sugar. Stir to combine.

Step 3

Cook the mixture for approximately 10 minutes over medium heat, stirring regularly. It’s ready once it noticeably thickens.

Step 4

Remove the filling from heat and allow it to cool thoroughly before using it.