1/2 c. butter, softened
1 pkg. butter cake mix
1 (29 oz.) can sliced peaches, drained
1/2 c. sugar
1 tsp. cinnamon
1 c. sour cream
1 egg

Cut butter into dry cake mix until crumbly. Put mixture into ungreased 9x13 inch pan. Build up the edges slightly. Bake at 350 degrees for 10 minutes. Place peaches on warm crust. Mix sugar and cinnamon and sprinkle over peaches. Blend sour cream and egg and drizzle over peaches. Bake 25 minutes more at 350 degrees. Serve warm with vanilla ice cream or whipped cream.