For the brownie, in a bowl, mix butter, sugar, cocoa and eggs until creamy. Add flour, baking soda and mix well. Reserve.
3. Step
Transfer batter to a greased and floured 9-inch (22 cm) bundt pan and spread evenly.
4. Step
Bake for 25 minutes. Set aside.
5. Step
For the carrot cake, in a blender mix carrots, oil, eggs, sugar until well combined. Add flour, baking powder and blend to combine and smooth.
6. Step
Pour the carrot cake batter over the pre-baked brownie.
7. Step
Bake for 45-50 minutes, or until a toothpick comes out clean. Set aside for 10 minutes to cool before turning out.
8. Step
For the chocolate sauce, mix chocolate and cream in a small bowl and microwave on medium power for 1 minute and 30 seconds, stirring at each 30 seconds.