INGREDIENTS
1 cup
unsalted butter, at room temperature
1 cup
light brown sugar, packed
1/2 cup
granulated sugar
1
large egg, at room temperature
1
large egg yolk, at room temperature
1 tbsp
vanilla extract
2 cups
unbleached all-purpose flour
1 cup
quick-cooking or old-fashioned oats
1 tsp
baking powder
1 tsp
baking soda
1 tsp
kosher salt OR 3/4 teaspoon regular table salt
3 cups
semi-sweet chocolate chips