Preheatat oven 350F. Set two cookie sheets with parchment paper.
In the mixer, cream sugars and butter until fluffy. Add eggs and vanilla. Then add flour, baking soda and salt. Do not over beat. Then with a spatula or big spoon fold chocolate chunks into cookie dough.
Drop spoon fulls into the cookie sheets 2 inches apart. Bake 8 to 10 min.