Blueberry Oat Bars recipe.

Ingredients
1 1/2 cups all-purpose flour
1 1/2 cups quick-cooking oats
1 1/2 cups sugar, divided
1/2 teaspoon baking soda
3/4 cup cold butter
2 cups fresh or frozen blueberries
2 tablespoons cornstarch
2 tablespoons lemon juice

Directions
In a bowl, combine flour, oats, 1 cup sugar and baking soda. Cut in butter until mixture resembles coarse crumbs. Reserve 2 cups for topping. Press remaining crumb mixture into a greased 13-in. x 9-in. x 2-in. baking pan; set aside.
In a saucepan, combine blueberries, cornstarch, lemon juice and remaining sugar. Bring to a boil; boil for 2 minutes, stirring constantly. Spread evenly over the crust. Sprinkle with the reserved crumb mixture. Bake at 375 degrees F for 25 minutes or until lightly browned. Cool before cutting.