My mother-in-law made these when we visited this summer. So good.
1 stick of butter
1 c. brown sugar
3/4 c flour
1/2 t salt
1/2 t baking soda
2 c. oatmeal
1 t vanilla
Mix above ingredients. Press 1/2 of the mixture into greased 9x13 pan, reserving 1/2 of mixture for later.
Melt 6oz chocolate chips, 1 can sweetened condensed milk and 1 tsp butter. Add 1/4 tsp salt and 1 tsp vanilla.
Pour melted mixture over dough. Drop reserved dough over chocolate layer.
Bake 20-25 minutes at 350degrees.