Preheat oven to 350F and line a 12 count muffin pans with paper liners.
In a bowl using a stand mixer or electric mixer, whisk together flour, sugars, baking powder, salt, cinnamon and nutmeg.
Mix in oil. Add eggs, one at a time. Beat until well combined.
Whisk in vanilla extract.
Add carrots and Thunderbird bar nibbles and stir until combined.
Evenly divide batter into cupcake liners, filling each 3/4 of the way full. Place in the oven and bake on 350F for 20-25 minutes. Tip: To know if the cupcake is fully cooked insert a toothpick in the center and if it comes out clean or with moist crumbs, its ready!
Allow to cool before decorating with cream cheese frosting.