Blueberry Crumble Bars

​Mom gave me part of the 11 pounds of blueberries she bought, and while I don't like to eat them I DO like to eat baked goods with them.

• 3 cups flour
• 1/2 cup sugar
• 1/2 cup brown sugar
• 1 tsp baking powder
• 1/4 tsp salt
• 1 large egg

• ​1 1/2 tsp vanilla extract
• 1 cup unsalted butter, chilled and cubed
• 1 tbsp cornstarch
• 1/2 cup granulated sugar
• 1 1/2 tbsp lemon juice
• 4 cups blueberries, room temperature

---

1. Preheat oven to 375 and prepare a 9x13-inch baking dish
2. In a large mixing bowl whisk together flour, 1/2 cup granulated sugar, brown sugar, baking powder and salt. 
3. In a large bowl, whisk together egg and vanilla. 
4. Mix in flour, 1/2 cup sugar, brown sugar, baking powder and salt
5. Add cold butter cubes - cut together with fork/knife/pastry cutter until crumbly 
6. Press 1/2 of the mixture evenly into prepared baking dish.
7. In a separate mixing bowl, whisk together remaining 1/2 cup sugar and cornstarch
8. Stir in lemon juice and blueberries
9. Spread berries evenly over crust.
10. Sprinkle remaining crumb mixture over berries. 
11. Bake about 38 - 42 minutes until golden brown.

Make more lemony by adding lemon zest.