Ingredients:

• 3 1/2 cups (390g) old-fashioned rolled oats
• 1 1/2 cups (190g) all-purpose flour
• 1 1/2 teaspoons baking soda
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 1 3/4 cups (325g) light brown sugar, lightly packed
• 1 cup (280g) smooth peanut butter (not all-natural)
• 1 cup (228g) unsalted butter, at room temperature
• 2 large eggs, at room temperature
• 2 teaspoons vanilla extract