Preheat the oven to 375℉ and prepare a jelly roll pan (10-15-inch baking sheet) with parchment paper and cooking spray.
Place the grated carrots and brown sugar in a bowl and mix to combine. Set aside.
Mix flour, salt, spices, baking powder, and baking soda in a large bowl, and set aside.
Add the eggs to the carrots and mix vigorously. It should become foamy on top.
Next, add the avocado oil, and vanilla extract to the brown sugar and carrots. Mix to combine.
Slowly fold the dry ingredients into the wet. Once combined, pour the batter into the prepared jelly roll pan.
Bake at 375℉ for 10-15 minutes.
While the cake is in the oven, sprinkle ¼ cup of powdered sugar onto a clean kitchen towel.
When the cake is done, take it out of the oven and set aside to cool for 5 minutes.
After 5 minutes, carefully flip the cake out of the pan onto the kitchen towel.
Starting at one of the short ends, roll the cake, and place it seam-side down to cool completely, about an hour.
While the cake is cooling, make the filling. Place all of the ingredients into a bowl and mix using a hand mixer until smooth. Set aside.
Once the cake has cooled, slowly, unroll it. Spread the cream cheese frosting, leaving about ½ inch along the border.
Roll the cake back up and sprinkle with powdered sugar.
Slice and enjoy.