I saw this recipe at Treat Yourself and just had to make it. I love the mixture of chocolate and cinnamon.
First sift the flour, baking powder, salt, and set aside. Beat the eggs in another bowl.
Add sugar, then the oil, milk and vanilla.
Add the dry mix slowly.
Then separate part of the dough. To one part add the melted chocolate.
Now put half the cinnamon dough on prepared pan, then pour in the chocolate mixture. Pour the rest of teh cinnamon dough on top and swirl with a knife to mix.
Cinnamon-Chocolate Ribbon Cake
Adapted from Bon Appétit
4 ounces semi-sweet chocolate, chopped
3 cups cake flour
1½ tsp. baking powder
½ tsp. salt
3 large eggs
2 cups sugar
1 cup vegetable oil
1 cup whole milk
1 tsp. vanilla extract
4 tsp. ground cinnamon
1/3 cup whipping cream
¼ cup (½ stick) butter
2 tbsp. light corn syrup
6 ounces semisweet chocolate, chopped
Position rack in center of oven and preheat to 325ºF. Grease a 12 cup bundt pan and set aside. Place chocolate in a medium microwave-safe bowl. Heat in 30-second intervals, stirring in between each one, until the chocolate is almost melted. Allow the residual heat to melt the rest of the chocolate and set aside. (Alternatively, you can set the bowl over simmer water. Do not allow the bottom of the bowl to touch the water.)
Combine cream, butter, and corn syrup in heavy medium saucepan. Stir over medium heat until mixture simmers. Remove from heat; add chocolate. Stir until chocolate melts and glaze is smooth. Let cool until glaze thickens slightly but is still spreadable, stirring occasionally, about 30 minutes.