2 c. flour
1 c. packed brown sugar
1/2 c. butter
1 c. pecan halves

CARAMEL LAYER:

2/3 c. butter
1/2 c. brown sugar
1 c. chocolate chips

Heat oven to 350 degrees. Combine all crust ingredients except pecans. Beat until well mixed and particles are fine. Press in bottom of 9 x 13 inch pan. Sprinkle pecans over unbaked crust. In 1 quart pan combine 2/3 cup butter and 1/2 cup brown sugar. Cook over medium heat until comes to a boil, stirring constantly until it reaches 242 degrees on candy thermometer (1 minute). Pour over pecans and crust. Bake for 18-22 minutes or until caramel layer is bubbly. Immediately sprinkle chips; allow to melt slightly, 2-3 minutes. Swirl chips leaving some whole for marble effect. Cover and cut into bars.