Preheat oven to 350 degrees F. Prepare muffin tins (24). I use unbleached baking cups (see notes).
In a large bowl, whisk together dry ingredients: flour, cinnamon, baking powder, baking soda and salt.
In a separate bowl, combine liquid ingredients: carrots, apples, pumpkin, maple syrup, milk, butter, eggs, vanilla and molasses, until well combined.
Add liquid to dry ingredients and stir until combined. Fold in the walnuts.
Bake about 20 minutes or until a toothpick comes out clean. Serve warm.