Chocolate Chip Cookies

Ingredients

• 3/4 cup unsalted butter* - (6 oz or 170 g)
• 3/4 cup packed brown sugar
• 1/2 cup white sugar
• 2 tsp vanilla extract
• 1 whole large egg
• 1 large egg yolk
• 2 cups all-purpose flour
• 1/2 tsp baking soda
• 1/2 tsp Fleur de Sel (or 1/2 tsp regular salt)
• 1 to 2 cups chocolate chips**