1cupcold unsalted butter (2 sticks), cut into tiny cubes
1large egg, at room temperature
Zest and juice of one small lemon; divided
1/2cup+ 2 tablespoons white sugar
1tablespooncrystalized ginger, chopped
Preheat the oven to 375 degrees (F).
In a large bowl, stir together the brown sugar, flour, salt and lemon zest. Use your hands to blend in the butter and egg. The dough will be crumbly! Divide in half; press the one half into a 9x13 inch non-stick baking dish.
In a separate large bowl, stir together the sugar, cornstarch, ginger, and lemon juice. Gently stir in the blueberries. Sprinkle the blueberry mixture evenly over the crust. Crumble remaining dough over the berry layer.
Bake in preheated oven for 35-45 minutes, or until top is slightly brown. Cool completely before cutting into squares. These go great with coffee ;)