In a bowl, beat butter until creamy, then add eggs, vanilla and sugar. Mix until well combined.
To the wet ingredients, add baking soda, flour, salt, and mix well, then add chocolate pieces and stir by hand.
Place 3-1/2 ounce balls of dough (about 1/3 cup each) to a foil lined pan
Place balls of dough on a foil lined baking sheet and then place in freezer for 15 minutes.
Then place chilled cookie sheet in preheated 350 degree oven on middle rack for 10 minutes. Lift the baking sheet and and let it drop down against the counter, so the center of the cookie collapses and the edges fall back down.
Place back in oven for 2 more minutes and repeat again in another 2 minutes or until edges are golden brown, the centers will be much lighter in color. Transfer to a baking rack to cool.