Preheat oven to 350 degrees. Gather all your ingredients so that you have everything close at hand on the counter or table.
Prepare the Cookie Dough
In large mixing bowl, cream together the softened butter, peanut butter, and granulated sugar. Add in large eggs and vanilla extract. Mix to incorporate.
In a small bowl, mix together the all-purpose flour, old-fashioned oats, baking soda, and salt. Add to creamed mixture until combined. Stir in semi-sweet chocolate chips.
Bake the Cookies
Drop by large spoonfuls onto baking sheets lined with parchment paper or silicone baking mats. Bake in preheated oven for 10-12 minutes until golden brown. Makes 3 dozen cookies.
Notes
*Unless otherwise indicated, all butter used on this recipe site is salted.