Grease the bottom and sides of a 9x13 baking pan.
Reserve 2/3 cup dry cake mix for the filling.
In a large mixing bowl combine remaining dry cake mix, margarine, and 1 egg. Mix until crumbly.
Press into greased pan.
Bake at 350 degrees for 15 minutes, until light golden brown.
Meanwhile, prepare your filling.
In a large mixing bowl combine all of your filling ingredients and beat it on medium speed for 1-2 minutes.
Pour the filling over the partially baked crust and sprinkle the pecans over the top.
Return to the oven and cook for an additional 30 minutes until filling is set.
Cool and then cut into bars.