Preheat oven to 350 degrees and line two cookie sheets with parchment paper

Using a medium bowl, whisk together the flour, cornstarch, baking soda, and salt until combined

Using a large bowl, cream together the butter, light brown sugar, and sugar until light and fluffy

Add in the egg and cream everything together.

Slow mix in the dry ingredients until the dough has formed

Fold in 1 C of the chocolate chips, caramel bites, caramel chips, and crushed pretzels

Mix the remaining 1 C of the chocolate chips, caramel bites, caramel chips and pretzels in a small bowl and set aside

Scoop 2 tablespoons of cookie dough onto the cookie sheet and bake for 6 minutes

Remove from oven and carefully sprinkle on some of the topping mixtures onto the cookies

Place back into the oven and continue to bake for another 4-6 minutes or until lightly golden brown

Enjoy!