Coffeecake!

I made coffeecake! It was for a potluck dinner I was going to with some friends and since baking is my strong suit, I decided to make everyone dessert. The making and baking of it was pretty easy, but the result disappointed me a little. I expected my coffecake to turn out like one of those lavish contraptions people see in bakeries, full of texture, rich scents, and topped with confectioner's sugar. Instead it just turned out to be like regular yellow cake except for the cinnamon I sprinkled on top of it. Where did I go wrong? I followed the recipe. Was it because I didn't have enough butter? Was it because I used a cake pan instead of a bundt pan? What was it? I must know. I have written a letter to my dear friend in the South and asked for advice. She is a well-seasoned baker, especially in coffeecake (her specialty) and so I am waiting for a reply.