Mix brown sugar, flour and butter. Take out 1 cup of this mixture for the topping.

Mix the remainder od the first mixture with the baking soda, salt, egg, milk and vanilla. Pour this into the pan.

Mix the 1 cup of reserved mix with the pecans and cut up Heath bars. Sprinkle on top.

Bake 30 minutes in a 350° oven. Do not grease the pan. (assuming a 9 x 13 pan)