Oatmeal Chocolate Chip Peanut Butter Cookies - Six Sisters' Stuff

Ingredients

• 1 cup butter (room temperature)
• ¾ cup granulated sugar
• 1 ¼ cup brown sugar
• 1 cup peanut butter
• 2 eggs (room temperature)
• 1 egg yolk (room temperature)
• 1 ½ teaspoon vanilla extract
• 1 ½ cups all-purpose flour
• 1 teaspoon baking powder
• 1 teaspoon baking soda
• ½ teaspoon salt
• 1 teaspoon cinnamon (optional)
• 2 cups old fashioned oats
• 2 cups chocolate chips