In a medium bowl, mix together the flour, baking soda, salt and cinnamon. Set aside.
In a large bowl, whisk together the eggs, sugar and vanilla. Add the oil and melted butter and stir until mixed, then add the flour mixture and stir until mixed. Stir in the carrots, nuts and pineapple.
Line about 32 cupcake cups with liners Bake at 350 degrees for 20-24 minutes, or until they are golden and a toothpick inserted into the center comes out clean.
Let cool on a rack and frost with your favorite cream cheese icing
Cream Cheese Icing
In a large mixing bowl, using an electric mixer, beat the butter and cream cheese on medium speed until blended. Don't overbeat or the cream cheese icing may become droopy. Beat in the confectioners' sugar ½ cup at a time, scraping the side of the bowl often. Beat in vanilla.