Ingredients
Equipment
Method
Prep the oven and loaf pan
- Preheat the oven to 350°F (175°C). Set out a 9×5-inch loaf pan.
- Grease the loaf pan and line it with parchment paper. Make sure the paper extends up the sides for easy lifting.
Make the batter
- Whisk together all-purpose flour, baking soda, baking powder, salt, ground cinnamon, and ground nutmeg. Mix until the dry spices are evenly distributed.
- Beat unsalted butter and both sugars until fluffy. This should look lighter in color and smoother in texture.
- Beat in the eggs one at a time, then mix in vanilla extract and sour cream. Stop once the batter looks uniform.
- Fold in the shredded zucchini, squeezing out excess moisture beforehand. Fold gently to keep the batter airy.
- Stir the dry ingredients into the wet ingredients until just combined. Do not overmix.
Add the cinnamon swirl
- Mix brown sugar, ground cinnamon, and melted butter in a small bowl. Stir until the mixture looks like wet crumbs.
- Pour half the batter into the loaf pan, sprinkle with half the cinnamon mixture, and repeat with remaining batter. Swirl gently with a knife to create ribbons.
Bake
- Bake at 350°F (175°C) for 55–65 minutes. The loaf is done when a toothpick inserted into the center comes out clean.
Finish and serve
- Cool completely before glazing. This helps the drizzle set instead of soaking in.
- Whisk cream cheese, powdered sugar, milk, and vanilla extract until smooth, then drizzle generously over the loaf. Slice and serve.
Notes
Pro tip: squeeze the shredded zucchini well (and blot if needed) so the loaf bakes up tender, not wet. Store covered in the refrigerator for up to 4 days; freeze wrapped slices for up to 2 months. For a lighter option, use low-fat cream cheese in the drizzle and reduce milk by 1 tbsp if it looks too thin.
