1 box yellow cake mix
1 cup sour cream or plain yogurt
1/4 cup butter, melted
1 teaspoon vanilla
1 1/4 cups flour
2/3 cup brown sugar
1/2 cup sugar
1/2 teaspoon salt
1 teaspoon cinnamon
1/2 cup butter, cold and cut into small cubes
a couple handfuls of mini chocolate chips if desired
1 For the cake, preheat oven to 350 and grease a 9 x 13″ pan.
2 Mix together all cake ingredients until well combined.
3 For the streusel, whisk together dry ingredients then cut butter into dry ingredients with a pastry blender or two knives until mixture is crumbly.
4 Pour half the cake batter into bottom of pan and spread to cover. Top with half the streusel then repeat layers one more time. (I added a handful of mini chocolate chips to the top of each streusel layer.)
5 Bake for 30 – 35 minutes or until toothpick inserted in center comes out clean.
recipe from Creme de la Crumb