Blueberry-Lemon Crumb Bars

Step 1
Preheat oven to 400 degrees F (200 degrees C). Grease a 9×13 inch baking pan.

Step 2
Start by making the crust. In a medium bowl, stir together the 2 cups flour, 2 tablespoons white sugar, lemon zest and salt. Cut in the 1/2 cup butter until the mixture resembles coarse crumbs. Beat egg and vanilla together; stir into the crumb mixture until a dough forms. Press into the bottom of the prepared pan.

Step 3
Bake for 12 to 15 minutes in the preheated oven, until golden. Remove from oven and set aside to cool slightly.

Step 4
Sprinkle blueberries over the crust. Combine the 1/4 cup sugar and nutmeg; sprinkle over the blueberries. Make the topping: In a medium bowl, cream together the 5 tablespoons butter and brown sugar until smooth. Mix in the flour, so that the mixture is crumbly like streusel. Sprinkle over the blueberry layer.

Step 5
Bake for 20 to 25 minutes in the preheated oven, until browned. Cool and then dust with confectioners' sugar before cutting into bars.