Press cookie dough into a parchment paper lined 15x10x1-inch baking sheet. Bake in a 350 degree oven for 15 minutes. Remove and cool slightly.
In a microwave safe bowl, combine sweetened condensed milk with chocolate morsels. Heat for 30 seconds, stir, and heat an additional 30 seconds. Stir until smooth and creamy. Spread evenly over baked cookie bars.
Sprinkle immediately with m&m minis. You can use regular sized candies if you prefer.
Refrigerate until fudge layer sets up (about 2 hours, or overnight). Store in airtight container. ENJOY