1 package French vanilla cake mix
1/2 cup butter, softened
2 cups pecan halves
2/3 cup butter
1/2 cup packed brown sugar
1 (6 ounce) package semisweet chocolate chips (1 cup)

Heat oven to 350 degrees. Mix cake mix (dry) and 1/2 cup butter in medium bowl, using pastry blender or crisscrossing 2 knives, until crumbly. Press firmly in bottom of ungreased rectangular pan, 13 x 9 x 2 inches. Bake 8 to 10 minutes or until light brown. sprinkle pecan halves evenly over baked layer. Heat 2/3 cup butter and the brown sugar to boiling in 2-quart saucepan over medium heat, stirring occasionally; boil and stir 1 minute. Spoon mixture evenly over pecans. Bake about 20 minutes or until bubbly and light brown. Sprinkle chocolate chips over warm bars; cool. Cut into 8 rows by 4 rows.