Preheat oven to 350 degrees
Line a 9X13 pan with aluminum foil and spray with PAM.
In a medium bowl, stir together melted butter, sugar, soda, oatmeal, flour, salt and peanut butter.
Set aside 1 ½ cup of the dough in a separate bowl.
Press the rest of the dough into the prepared pan. Bake for 10 minutes.
Spread sweetened condensed milk on top of warm crust. Drop remaining dough by small spoonfuls on to sweet milk. Bake for 15 minutes.
Remove from oven and sprinkle with chocolate chips and peanut butter chips. Return to oven for 8 more minutes until top is golden and chips are starting to get soft.
Allow bars to cool completely before cutting.
Enjoy!