Say's Yellow Cake with Warm Chocolate Glaze

This is from Fresh Every Day - Sara Foster - of Durham fame. I got to see her this weekend and told her how I loved her cookbook!
Anyway, if I had buttered the crease of the round pan this would have been great, but all of it didn't come out so I made a trifle out of it. Still, the yellow cake is a winner and how can you go wrong with chocolate sauce?

6 T softened unsalted butter
1 cup sugar
2 eggs
1 tsp vanilla
1 cup flour
1/2 tsp baking powder
1/4 tsp soda
1/4 tsp salt
1/2 cup buttermilk

1/2 bag semi sweet chocolate chips
2 T unsalted butter
1/3 cup sugar
1/4 cup milk

Cream butter, sugar, add eggs one at a time, then vanilla. alternate dry ingredients with buttermilk. 350 - 25 minutes, round cake pan - well greased.
While that is cooking, melt down chocolate, sugar, and milk over low heat. Add butter when it is completely melted and off the burner.
Poke holes in the top of the done cake and pour 1/2 the glaze over the top. Then let cool 5-10 minutes, dump it out, and serve with the rest of the sauce.
Sara Foster has another winner!