Preheat oven to 350°.
Lightly spoon flour into dry measuring cups; level with a knife. Combine flour and next 7 ingredients (through nutmeg) in a large bowl; make a well in center of mixture. Combine canola oil, eggs, and pumpkin in a medium bowl; stir with a whisk until smooth. Add to flour mixture, stirring just until moist. Fold in currants.
Spoon batter into 2 (9 x 5-inch) loaf pans coated with cooking spray. Bake at 350° for 1 hour or until a wooden pick inserted in center comes out clean. Cool loaves in pans 10 minutes on a wire rack; remove from pans. Cool loaves completely.