Step 1

Preheat oven to 350 degrees F. Lightly oil and flour a 9-by-5-inch loaf pan.

Step 2

Whisk all-purpose flour, whole-wheat flour, baking powder, baking soda, cinnamon, ginger, salt, allspice and cloves in a medium bowl until combined.

Step 3

Beat squash puree, sugar, honey and oil in a large bowl with an electric mixer at medium speed until smooth, about 1 minute. Beat in egg and egg white. Turn off the mixer, add the dry ingredients and beat at low speed until combined. Scrape into the prepared loaf pan.

Step 4

Bake the bread until lightly browned and a toothpick inserted into the center comes out clean, 45 to 50 minutes. Cool in the pan for 10 minutes, then turn out onto a wire rack and let cool for 30 minutes more. Serve warm.