One Chocolate Chip Cookie recipe

Ingredients

• 2 Tbsp salted butter
• 3 Tbsp packed light-brown sugar
• 1 pinch salt
• 1 tbsp whisked egg*
• 1/4 tsp vanilla extract
• 1/3 cup all-purpose flour
• 1/8 tsp baking soda
• 1/4 cup chocolate chips, divided