This easy sheet pan carrot cake bars recipe combines all the warm flavors of a classic carrot cake into convenient, shareable bars. Perfect for any occasion.
Preheat your oven to 350°F (175°C). Grease a 12x17 inch rimmed baking sheet or line with parchment paper.
In a medium bowl, whisk together flour, baking powder, baking soda, cinnamon, and nutmeg. Set aside.
In a large bowl, combine granulated sugar, brown sugar, and oil. Add eggs one at a time, mixing after each addition. Stir in vanilla extract.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in the grated carrots and walnuts, if using.
Pour the batter into the prepared baking sheet and spread evenly.
Bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean.
Allow the cake to cool completely in the pan before cutting into bars.
Notes
For a delicious cream cheese frosting, mix together 8 oz cream cheese, 1/4 cup softened butter, 2 cups powdered sugar, and 1 teaspoon vanilla extract until smooth, then spread over cooled bars.