Although I have never eaten any coffee cake (or anything else for that matter) at Starbucks, I have heard others rave about it so when I saw this recipe I decided to give it a shot. It's an easy coffee cake that I whipped up the other morning and took to work for our faculty to enjoy. Judging by the empty pans and requests for the recipe, I would say it's definitely a hit and something I'll be making again soon.
1 box yellow cake mix (plus ingredients on back of box)
1 cup sour cream
1 cup butter or margarine
2 1/4 cups flour
1 1/2 T cinnamon
1 ¾ cups sugar
1 1/2 T vanilla
Powdered sugar (for dusting)
Preheat oven to 350 degrees. Prepare cake mix in large bowl according to directions on box adding in 1 cup sour cream. Spray 9 x 13 pan with cooking spray. Pour batter into pan. Bake at 350 degrees for 20-25 minutes or until center is just barely set. While cakes are baking, prepare crumb topping. In large bowl of electric mixer combine, butter, flour, cinnamon, sugar, and vanilla until all crumbly. Immediately after cake is removed from oven, break crumb topping into marble size pieces with fingers, sprinkling over top. Put back in oven and bake an additional 10-15 minutes. Let cool fully then dust with powdered sugar. Cut into squares and serve warm.