1 box butter recipe cake mix
2 sticks butter or margarine, softened
4 eggs
1 (8-ounce) container sour cream
1/2 cup packed brown sugar
1/3 cup chopped pecans
2 teaspoons ground cinnamon
1 cup powdered sugar
1 tablespoon milk
1 teaspoon vanilla

Preheat oven to 350 degrees.
Generously grease bottom only
of 9-inch by 13-inch baking pan.
Remove 1/2 cup dry cake mix, and
stir together with brown sugar,
pecans and cinnamon; set aside.
Beat remaining cake mix, butter,
eggs and sour cream in a large bowl
on medium speed for 2 minutes,
scraping side of bowl occasionally.
Spread half the batter in prepared
pan. Sprinkle on pecan mixture,
and carefully spread remaining
batter evenly over pecan mixture.
Bake 30 to 35 minutes until cake
is golden brown and springs back
when touched in the center.
Stir together powdered sugar,
milk, and vanilla, adding additional
tablespoons of milk if needed, until
mixture is thin enough to drizzle.
Pierce the top of the warm cake
several times with a fork and spread
glaze over warm cake. Cool 1 hour.
Store covered.