Chocolate Pecan Pie Cake - cooking recipe

Ingredients

1 butter recipe cake mix (MINUS 2/3 cup to set aside)
1/2 cup softened margarine
1 egg
3 eggs
1 1/2 cups Karo syrup
2/3 cup brown sugar
2 1/2 cups chopped pecans
1 teaspoon vanilla
1 (6 ounce) package chocolate chips

Preparation

For the first part: Lightly grease the sides only of a 10x13 pan.
Mix the first 3 ingredients and place in pan, bake for 20 minutes at 350; let cool.
Then mix together the remaining ingredients.
Pour over baked layer and bake 45 minutes at 325 (reduced temp from above).
If center is not set by then, turn off oven and leave in for 15 minutes; remove and let cool.