Blueberry Crunch Cake

Preheat the oven to 350 degrees. Coat an 8″x8″ baking dish with nonstick spray. In a large bowl, combine flour, baking soda, salt, and sugar. In a medium bowl, combine egg, yogurt, orange olive oil, and vanilla extract. Stir egg mixture into flour mixture, just until moist. Stir in blueberries. Spoon batter into prepared baking dish. In a small bowl, using a fork, combine flour, sugar, butter or margarine, and cinnamon until mixture resembles coarse crumbs. Sprinkle over cake. Bake 40-45 minutes or until a wooden pick inserted into the center comes out clean.