Chocolate-Yam Marble Cake

• 1/2 cup butter, room temperature
• 1 cup sugar
• 2 eggs
• 2 teaspoons vanilla extract
• 1/2 orange, zested and juiced
• 1 cup pureed yams or 1 (15-ounce can) yams, drained and pureed
• 3 tablespoons sour cream
• 2 cups flour plus 2 tablespoons
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• Salt
• 3 tablespoons unsweetened cocoa
• Pinch of cayenne pepper
• 3 tablespoons hot water
• Special equipment: 1 1/2-quart glass loaf pan

1. Preheat the oven to 350 degrees F and grease a 1 1/2-quart glass loaf pan.
2. In a large bowl, using a mixer, cream the butter with sugar at high speed until fluffy and pale yellow, about 5 minutes.
3. Add in the eggs, vanilla, and orange zest.
4. Mix in the yams, sour cream and orange juice.
5. In a medium bowl, sift together the flour, baking powder, baking soda, and 3/4 teaspoon salt.
6. Slowly mix in the dry ingredients to the butter mixture, mixing on low speed until just incorporated.
7. Spoon out 1/3 of the cake batter and place in a small bowl.
8. In a small measuring cup, make a thin paste of the cocoa, cayenne, and hot water, stirring until smooth.
9. Pour into the small bowl of cake batter and stir just until well mixed.
10. Pour half the (non-chocolate) yam batter into the prepared loaf pan.
11. Spoon on the chocolate batter, and then finish by pouring the remaining yam batter on top.
12. Use a butter knife to cut through the cake to create a marbling effect.
13. Bake until the cake is firm and toothpick comes out clean, 55 to 60 minutes.
14. Cool before slicing.

butter, sugar, eggs, vanilla, orange, yams, sour cream, flour, baking powder, baking soda, salt, unsweetened cocoa, cayenne pepper, water, glass

Taken from www.foodnetwork.com/recipes/melissa-darabian/chocolate-yam-marble-cake-recipe.html (may not work)