Preheat oven to 350 degrees and line a large baking sheet with parchment paper.
Place butter into a small saucepan over medium-low heat. Swirl and heat until deep golden brown. Remove heat and allow to cool for 15 minutes.
Place browned butter and little bits from the pan into a stand mixer along with the brown and granulated sugar. Beat to combine then add egg and vanilla beating to combine. Add your flour, pudding mix, baking soda, corn starch, salt and mix on low until just combined.
Add the toffee bits and chocolate chips to the dough and mix to combine.
Using an regular ice cream scoop or your ¼ cup dry measuring cup, scoop out your cookies and place them on your prepared baking sheet.
Sprinkle to top of each cookie generously with flaked sea salt.
Place the cookies in the freezer for 15 minutes.
Remove the cookies from the freezer and place them on a baking sheet lined with parchment paper leaving about 2-3 inches of space between each cookie.
If desired, sprinkle the cookies generously with sea salt.
Bake at 350 degrees for 14 minutes.