In a large bowl, measure in the butter, applesauce and sugars. Using a hand mixer, cream the ingredients until smooth.
Add the egg and vanilla extract to the wet ingredients. Mix until combined.
In a medium-sized bowl, sift the flour, cocoa powder, baking soda and salt. Whisk to combine, then slowly measure into the wet ingredients, mixing until the ingredients are incorporated.
Once the dry ingredients have been mixed into the wet ingredients, measure in the chopped SNICKERS® Bites and the caramel, folding in with a spatula until just incorporated.
Once the dough has been prepared, cover with plastic wrap, and chill for at least one hour.
When the dough has finished chilling, preheat the oven to 350°F. Line a large baking sheet with parchment paper, and set aside.
Using a cookie scoop, dollop the chilled dough on the baking sheet, leaving 2" between each cookie, as they spread out quite a bit.
Transfer the baking sheet into the oven, and bake for 12 minutes, or until the cookies have flattened and are crisping up around the edges.
When the cookies have finished baking, let them cool on a cooling rack. Serve warm with milk, and enjoy!