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Preheat oven to 350°F. Mix flour, sugars and cinnamon in large bowl. Cut in cold butter with pastry blender or 2 knives until mixture resembles coarse crumbs. Set aside.
Beat cake mix, egg, sour cream, melted butter and vanilla in large bowl with electric mixer on medium speed about 1 minute or just until mixed.
Spread evenly in greased and floured 13x9-inch baking pan. Sprinkle evenly with topping mixture.
Bake 30 to 35 minutes or until cake pulls away from sides of pan. Cool on wire rack. Cut into squares to serve.
I love coffee crumb cake
Lori | March 05, 2013
Just finished baking this recipe about 40 minutes ago. The kitchen smelled like heaven and the muffins were delicious. .. Thank you this recipe rocks
Loretta | May 23, 2016
I remember my grandmother baking this for Sunday morning breakfast. GREAT MEMORY! Thank you McCormick!
Robert | July 30, 2015
Best Crumb Cake I've ever had.
Kelly | May 11, 2014
This was a big hit at my house. I'll definitely be making this again.
Irene | June 17, 2014
This crumb cake is delicious and every time I make it, people rave about it and want the recipe.
Michelle | April 17, 2017
this is great
bonnie troupe | March 05, 2013
Very tasty, cake a tad dry. All in all I'll make again.
Jeanne Chase | May 14, 2013