Chewy Chocolate Chip Oatmeal Cookies

Bahan-bahan (36 porsi)

• 1 cup butter
• 1¼ cups dark brown sugar
• ½ cup granulated sugar
• 1 egg
• 1 egg yolk
• 1 teaspoon vanilla
• 2 cups all-purpose flour
• 1 cup old fashioned rolled oats (*)
• ½ teaspoon baking soda
• ½ teaspoon kosher salt
• ¼ teaspoon cinnamon (**)
• 2 cups semi-sweet chocolate chips