Step 1

Preheat oven to 375 degrees F. Coat a 12-cup muffin tin with cooking spray.

Step 2

In a large bowl, combine brown sugar, eggs, oil, vanilla, pineapple, and reserved juice; whisk until well combined. Add flour, baking powder, baking soda, cinnamon, and salt; whisk well. Fold in carrots, apple, and walnuts; mix well. Evenly divide batter into muffin cups.

Step 3

Bake 20 to 25 minutes, or until a toothpick comes out clean. Enjoy warm, or let cool.