Preheat the oven to 350°F and line an 8×8 baking pan with parchment paper and spray with non-stick cooking spray. Set aside.
In microwave, melt butter, set aside.
In another microwaveable bowl, add the caramels and heavy cream in a microwavable bowl and microwave in 45 second minute intervals stirring in between until the caramel is fully melted. If you want to use the stovetop use a small saucepan to melt the caramel.
In a mixing bowl, combine flour with oats, baking soda and salt, if using unsalted butter.
Add the brown sugar, and vanilla extract to the butter mixture and whisk to blend. Add to the dry ingredients, and stir with a spatula until combined. If it’s too sticky, add a tablespoon or two of oats, if needed)
Add half of the dough to the prepared baking pan and press into pan. Layer will be seem thin but it’s fine. Bake for 10 minutes.
Once it’s done, keep the oven on, but remove from the oven. Sprinkle the chocolate chips on top of the baked cookie layer, then pour the melted caramel on top of the chocolate chips. Then, crumble the remaining cookie dough on top of the caramel.
Transfer mixture back to the oven, and bake for 15-20 minutes or until the top is a light golden brown.
Remove bars from the oven, and allow to cool on a wire rack. Slice and serve.