Add soft butter into a bowl
Cream the butter and sugar together until nice and creamy
Add the eggs one at a time, mixing well after each addition
Sift together the cornstarch and baking soda with the flour
Add the dry ingredients to the wet ingredients and mix until just combined
Fold in the chocolate chips
Scoop the dough into evenly sized balls, about 30-40 grams each
Place the dough balls spaced apart on a baking sheet
Top each dough ball with 3 upside down chocolate chips
Bake at 350°F for 8 minutes if making smaller cookies, or 12-14 minutes for larger 55 gram cookies
