Beat together the butter and both sugars with a hand held mixer or stand up mixer until creamy.

Then add in the eggs and vanilla extract.  Mix until combined.

In a separate bowl, mix together the flour, baking soda, cornstarch and salt.

Reduce the mixer speed to low and slowly add in the flour mixture.  Mix until just combined, being careful not to over mix.

Then gently stir in the chocolate chips and butterscotch chips (reserve some for topping) by mixing these into the dough by hand.

Then refrigerate the dough for 30-60 minutes.

Preheat the oven to 350 degrees Fahrenheit.

Place tablespoons of the dough onto a baking sheet using a cookie scoop.  Top each cookie with the reserved chocolate chips and butterscotch chips and sea salt.

Bake for 10-13 minutes until the edges of the cookies are slightly golden brown.

Remove from the oven and let the cookies sit on the baking sheet for 5 minutes, then move them to a wire rack to cool completely.

Then the cookies are ready to serve and enjoy!