Combine orange juice, egg, and oil in a large bowl; beat at medium speed of an electric mixer until well blended. Gradually add flour mixture, stirring just until moistened. Gently fold in blueberries.
Spoon batter into an 8 1/2 x 4 1/2 x 3 inch loaf pan coated with cooking spray.
Bake at 350 F. for 50 minutes or until a wooden pick inserted in center comes out clean.Cool in pan 10 minutes; remove from pan, and cool completely on a wire rack.