Makes 12 small bars.
1 cup white sugar, divided in half
1/2 tsp baking powder
1 1/2 cups all-purpose flour
1/2 cup butter, cold
3 tsp cornstarch
1/8 tsp nutmeg
1/8 tsp salt
1/2 tsp vanilla
Juice from one small orange
1 tbsp zest from orange
2 cups fresh blueberries
Preheat oven to 375°. Grease a 9x9 inch pan.
In a medium bowl, combine 1/2 cup sugar, flour, baking powder, and salt. Mix in orange zest. Using a fork, cut in egg, vanilla and cold butter to form a crumbly dough.
Pour half of mixture into prepared pan and pat down to make bottom "crust".
In a separate bowl, combine 1/2 cup sugar, cornstarch and orange juice. Gently stir in blueberries. Pour mixture evenly over crust.
Add nutmeg to remaining crumb mixture and sprinkle over top. Bake for 40-45 min until top is slightly browned. Cool before cutting into bars.