Preheat oven to 350F.
In large bowl, sift flour, baking soda, cinnamon, cornstarch, and salt together. Set aside.
In a small sauce pan, melt butter over low heat until brown specks start to appear while stirring occasionally. Butter will start to foam, so keep a close eye on it to avoid burning. Remove butter from heat and allow to cool completely.
In separate bowl, beat browned butter, sugar, brown sugar until creamed together. Add in eggs, one at a time.
Fold in chocolate chips and butterscotch chips.
Drop by the spoonful two inches apart onto parchment lined cookie sheets.
Bake at 350F for 8-10 minutes until slightly brown. Remove from cookie sheets to cool completely.
