Scrumptious muffins

I've been baking these muffins for probably 15 years and they're delicious.
Mix 2 cups flour, 1 cup sugar, 2 teaspoons baking powder, 1/2 teaspoon cinnamon, 1/2 cup shredded carrots, 1/2 cup chopped walnuts and 1/2 cup raisins. In a separate bowl mix an 8-oz can of crushed pineapple, 2 eggs, 1 stick butter (melted) and 1 teaspoon vanilla extract. Fold wet ingredients gently into the dry ones, just until mixed. Spoon into muffin tin lined with cupcake papers. If there are any raisins sticking out, poke them down (otherwise they'll burn). Bake at 375 for 20 to 25 minutes until just brown.