1/2 c. butter
2 c. flour
1 c. brown sugar

Mix until crumbly and spread in 9 x 13 inch pan (ungreased). Sprinkle 1 1/2 cups pecan halves on top and put aside.

In a separate pan cook: 1/2 c. brown sugar

Cook until boiling and pour over pecans. Bake at 350 degrees for 20-25 minutes. Remove from oven and immediately spread 12 ounce milk chocolate chips on top. Let cool.