Chocolate Sweet Potatoes Marble Bundt Cake

The sumptuous chocolate cake with the hidden nutritional benefit of sweet potatoes was a fitting treat to celebrate our little one's second birthday.In just one year ,the apple of my eye has grown from being a crawling baby to a jumping ever so naughty toddler.Though just beginning in his vocal skills , babbling pretty much ,except for few simple words,my most loved one being thaan chu(for thank you);he has excelled in delighting himself with his explorations around the house,kitchen in particular is his favorite territory.Very often he sneaks in to the kitchen looking for reachable sweet munchies or grab some of his favorite pot and pans for a kitchen Orchestra.
As one would expect from a Health Nut Mom,I'm concerned about his big sweet tooth and prefer giving naturally sweet foods like fruits and dry fruits ,and almost never buy candies or chocolate treats.Thankfully besides chocolate the little guy absolutely loves fruits.
However I do allow occasional homemade goodies made with chocolate.And What's birthday without chocolate?Nothing quite says Happy birthday like Chocolate.The nutritional sweet potatoes add a silky moist texture to the cake and its mild flavors let this cake be predominately chocolate flavored.
This is a lofty cake rightly suited for feeding a crowd.But one can even make the same cake in a regular baking pan or a loaf pan,adjust the quantities proportionately.

Ingredients
For Chocolate layer
1 cup all purpose flour
1/2 cup whole wheat flour
1/2 cup unsweetened cocoa powder
2 Organic eggs
2 tablespoon Fat free Sour cream
1/2 cup brown sugar or use a natural sweetener like agave
1/2 cup semi sweet chocolate chips.
1/4 teaspoon salt
1/2 teaspoon baking powder
4 tablespoon(1/2 cup)Organic butter,melted and cooled,divided
1/2 cup reduced fat Organic milk

For Sweet Potato layer
1 cup all-purpose flour
1/2 cup Whole wheat flour
1 1\2 cup Sweet potato puree(1 whole medium size sweet potato),see how to cook sweet potatoes.
2 tablespoon Fat free Sour cream
2 Organic eggs
1/2 cup brown sugar or use a natural sweetener like agave
1/4 teaspoon salt
1/2 teaspoon baking powder
4 tablespoon(1/2 cup)Organic butter,melted and cooled
1/2 cup reduced fat Organic milk


Method
Preheat oven to 350F.Prepare the Bundt pan,first butter then dust with all purpose flour,tap out any excess flour.

Prepare the Chocolate ganache for the Chocolate layer
Melt 2 tablespoon of butter and the semisweet chocolate chips in a bowl(glass or steel) placed over saucepan with gently simmering water(double broiler).Stir occasionally until the mixture is smooth.Set the bowl aside.

Prepare chocolate Layer
Sift all the dry ingredients(flours and powders) in large mixing bowl.
In another mixing bowl whisk together melted butter and sugar ,Crack the eggs and whisk then add the prepared chocolate ganache, stir in milk ,sour cream and combine until mixture comes together. Now add the dry mixture slowly in to the wet mixture while stirring it.

Prepare the Sweet Potato Layer
Repeat the same.Sift all the dry ingredients(flours and powders) in large mixing bowl.In another mixing bowl whisk together melted butter and sugar ,Crack the eggs and whisk then add the sweet potato, stir in milk ,sour cream and combine until mixture comes together. Now add the dry mixture slowly in to the wet mixture while stirring it.

Bake
For marble pattern,add spoonful of sweet potato and chocolate mixture alternately. Then make a swirl pattern using a table knife through the batter to marble them.

Bake for 55 to 60 minutes, or until a knife inserted into the center of the cake comes out clean.Cool on rack for 30 minutes before trying to unmold it.Cool,slice and serve.Prepare extra chocolate ganache and drizzle on the cake,if desired.