Ingredients
Method
- Preheat the oven to 350°F (175°C) and grease a 9x13 inch pan. Whisk flour, baking soda, cinnamon, ginger, nutmeg, and salt in a large bowl.
- In another bowl, beat granulated sugar, brown sugar, and oil until lighter in color, about 2 minutes. Beat in eggs one at a time, then vanilla and sourdough discard.
- Fold the dry ingredients into the wet mixture just until no flour streaks remain. Do not overmix.
- Stir in the grated carrots and nuts until evenly distributed.
- Spread batter into the prepared pan and bake for 35 to 40 minutes, until a toothpick comes out clean. Cool completely in the pan on a wire rack.
- Beat cream cheese and butter until smooth, then gradually beat in powdered sugar and vanilla. Spread over the cooled cake and slice to serve.
Notes
Cooling time (about 1 hour) is not included in the prep or cook time. The frosted cake can sit at room temperature for a few hours but should be refrigerated after that. The crumb stays moist for days thanks to the oil and carrots.
