1. Combine the crumbs, butter and sugar.
2. Press into a greased 13 x 9 x 2 inch baking pan.
3. Bake at 350 degrees for 10 minutes.
4. Remove and set aside.
5. While bottom layer is cooking combine coconut, milk and pecans in a medium sized bowl.
6. Spread over the crust.
7. Bake at 350 degrees for 15 more minutes.
8. Cool completely.
9. In a small saucepan, melt chocolate bar and peanut butter over low heat.
10. Spread over bars.
11. Cool.
12. Cut into squares.