Shoofly Pie

Ingredients

• 2 cup all-purpose flour
• 2 tablespoon sugar
• ½ teaspoon salt
• 12 tablespoon (1 ½ sticks) cold butter, cubed
• ¼ cup ice water, plus more if needed
• 1 cup all-purpose flour
• ¾ cup brown sugar
• 1 teaspoon ground cinnamon
• ¼ teaspoon salt
• 6 tablespoon (½ stick) cold butter, cubed
• 1 cup boiling water
• 1 cup unsulphured molasses
• 1 teaspoon baking soda
• 1 teaspoon vanilla extract
• pinch of salt
• 1 large egg, beaten