Chocolate, chocolate chip cake

This recipe is from a Martha Stewart site.  I followed it to a T, but omitted the nuts & stirred in 1-1/4 cup mini semisweet chocolate chips at the end.

I made a simple buttercream frosting (didn't use the glaze printed) by using 1/2 stick soft butter, 1 tsp. vanilla, 3 C powdered sugar & enough milk drizzled in to make a light, spreadable frosting - put it in a mixing bowl & beat on a med-high setting, then spread it over the cooled cake.

http://www.marthastewart.com/354666/chocolate-bundt-cake