Line a rimmed quarter sheet pan with parchment paper, then set it aside.
Open the dough & discard the packaging. Slice the dough into 1/4" thick rounds.
1 16.5 oz tube refrigerated chocolate chip cookie dough
Transfer the dough rounds to the prepared pan in an evenish-ly space grid shape, then use clean hands to press it down and out into an even layer covering the entire pan.
Freeze flat for 20-30 minutes.
Add the chocolate chips and oil to a microwave safe bowl. Heat in 30 second intervals, stirring between each, until the chocolate's completely melted & smooth.
1 1/2 cups chocolate chips, 1 tbsp coconut oil
Working quickly, pour the chocolate over the chilled dough then spread it out with a spatula in an even layer. Sprinkle the candy out evenly across the entire pan, followed by a pinch of salt, if using.
1/2 cup mini m&m's, flaky sea salt
Freeze for at least 1 hour, until set & solid.
Break, or slice, the cookie dough bark into pieces and serve immediately.