Peanut butter bars

Peanut Butter Bars
1 (18.25 ounce) package yellow cake mix
1/2 cup chopped pecans
2/3 cup evaporated milk
1/4 cup margarine, melted
1/2 cup peanut butter chips
1/2 cup chocolate syrup
Combine dry cake mix, pecans, milk and margarine in a medium bowl; mix well. Pour half the mixture into a greased 9 by 13 inch baking pan. Bake at 350 degrees for 10 minutes. Sprinkle with peanut butter chips and drizzle with chocolate syrup. Top with small spoonfuls of remaining cake mixture. Bake for another 20 minutes. Cool and cut into bars.