01 -
Preheat oven to 350°F (175°C).
02 -
In a large bowl, combine applesauce or oil, sugar, and eggs.
03 -
Stir in flour, baking soda, baking powder, salt, and cinnamon until combined.
04 -
Fold in grated carrots, shredded coconut, chopped nuts (if using), vanilla, and crushed pineapple (with juice).
05 -
Pour the batter into a lightly greased or parchment-lined 10x15-inch jelly roll pan.
06 -
Bake for 25-30 minutes or until a toothpick inserted into the center comes out clean. Let it cool completely.
07 -
Beat the butter and cream cheese together until fluffy. Add vanilla and powdered sugar, and mix until smooth.
08 -
Spread the frosting evenly over the cooled cake bars.
09 -
Keep leftovers in an airtight container in the refrigerator for up to 3 days.