Ula's hip hugger bars

1 c brown sugar                                                       1/4 t salt
1/2 c butter                                                              1 t vanilla
1 egg                                                                       Filling:
1 1/4 c flour                                                             1 can sweetened condensed milk
1 1/2 c oatmeal                                                        1 T butter
1/2 t soda                                                                6 oz chocolate chips

Mix oatmeal mixture thoroughly. Pat 2/3 of the mixture on the bottom of 9 X 13 greased pan. melt the filling ingredients over low heat. Spread filling on top of the oatmeal mixture. Sprinkle remaining mixture over filling. bake 20 at 350*F.