Preheat your oven to 350°F (175°C) and prepare a 9-inch round cake pan.

Blend grated carrots, sugar, vegetable oil, and eggs until smooth.

Sift together flour, baking powder, salt, and cocoa powder in a large bowl.

Combine blended wet ingredients with dry ingredients without overmixing.

Transfer batter into prepared cake pan and smooth the top.

Bake for 30-35 minutes. Check doneness with a toothpick.

Cool the cake in the pan for about 15 minutes, then transfer to a wire rack.

In a saucepan, combine sweetened condensed milk, butter, and vanilla over low heat. Stir until thickened.

Whisk in cocoa powder until smooth to prepare the frosting.

Frost the cooled cake with the chocolate frosting and add chocolate sprinkles if desired.