Carrot Cake Cupcakes

• 4 eggs
• 375 gr carrots (grated)
• 300 gr sugar
• 220 gr flour
• 240 ml vegetable oil
• 120 gr semisweet chocolate chip morsels
• 110 gr packed dark brown sugar
• 60 gr walnuts (finely chopped)
• 30 ml orange juice
• 9 gr baking powder