A Fun and yummy recipe for blueberry cookie bars with a sweet icing drizzle.
Preheat oven to 350 degrees F and grease 9x13 baking dish
Prepare Blueberry Sauce: Combine sugar and cornstarch in small saucepan. Take 1/2 cup of the blueberries and crush with a fork. Add to the saucepan with 1/2 cup of water. Stir. Bring to a boil and cook until sauce is thickened and translucent. Remove from heat and add remaining 1 cup of blueberries. Allow to cool at room temperature.
In a large bowl, cream together oil, butter and sugar. Add eggs and vanilla and beat well. Add the flour and baking soda and stir just until the batter comes together.
Spread 2/3 of the batter in the bottom of the pan. Pour Blueberry sauce , then drop the remaining dough in spoonfuls over the fruit.
Bake for 30-40 minutes, until golden and springy to the touch. Let cool.
To make the icing, mix together icing sugar and lemon zest, then gradually add lemon juice until you have a smooth, slightly runny icing, adding more juice, if needed. Drizzle over cookie bars.
Once cooled, cut into bars.