1. Preheat oven to 350°F.
2. Cream together both sugars and softened butter. Mix in eggs, flour, baking soda, and oats until combined.
3. In a saucepan over low heat, melt together chocolate chips, sweetened condensed milk, butter, and vanilla, stirring until smooth.
4. Press ⅔ of the oatmeal mixture into a greased 9×13-inch baking dish.
5. Spread the chocolate fudge filling evenly over the oatmeal layer.
6. Crumble the remaining oatmeal mixture over the top.
7. Bake at 350°F for approximately 30 minutes. Let cool before slicing into bars!
