Cover an 8X8 baking pan with parchment paper or foil and spray it with a non stick cooking spray.

Beat together the brown sugar and butter with a hand held mixer or a stand up mixture until they are combined and creamy.  Add the vanilla and beat for one more minute.

Then add in the flour and condensed milk.  Slowly alternating between the 2 until both have been completely added and a soft dough forms.

Next hand stir in the miniature chocolate chips and M&M’s into the dough.

Then press the dough in an even layer in the prepared pan and place in the freezer for approximately 30 minutes while you prepare the topping.

To make the topping, place the chocolate chips and butter in a bowl and microwave in 30 second increments until melted (stir between each interval).

Then spread the chocolate evenly over the cookie dough layer and press the M&M’s into the chocolate.

Chill the bars in the fridge for at least 2 hours. Keep chilled until ready to serve, then cut into squares and enjoy.