1 - Preheat oven to 350°F (180°C).

2 - Grease an 8-inch (20 cm) square baking pan.

3 - To make the date filing: Combine the dates and water in a medium saucepan over high heat and bring to a boil.

4 - Reduce heat to low and simmer gently, stirring occasionally until the mixture thickens, around 6 to 8 minutes.

5 - Remove from heat, stir in vanilla and let cool.