• Turn on the oven at 180 degrees Celsius - 356 Fahrenheit.

Crust

• Place in a food processor: flour, butter, sugar, and salt. Add water gradually, and process until you get a ball of dough.
• Divide the dough into two parts in a ratio of 1/3 and 2/3. Wrap in cling film and place in the refrigerator for about half an hour.
• Remove the large part of the dough (2/3) from the refrigerator, and line a greased pan.

Blueberry Filling

• Mix blueberries, maple or sugar, vanilla extract, salt, and allspice; add the cornstarch diluted in water and mix well. Place the filling on the dough in the pan.
  
• Remove the other dough from the refrigerator - roll out into a sheet about the size of the pan, and cut into strips about 1-inch wide.
• Place the strips on the filling: create a shape of two-and-even (as in the picture); If necessary, stretch them slightly, and press the ends of the straps to the edges.
• Spray the strips of dough with Pam oil spray.
• Place in the oven, and bake until golden for 40-50 minutes.
  
• Remove from the oven, and let cool on a wire rack.

For Serving

• Serve with vanilla ice cream or white chocolate ice cream.