This Monster Skillet Cookie is a homemade take on the ever-popular Pizookie! This cookie is full of M&Ms, chocolate chunks, and peanuts, all wrapped up in an ooey gooey cookie made in a cast iron skillet. Follow this recipe to the T, or add your own mix-ins for a pizookie personalized with everything you love!
Preheat oven to 350 degrees. Lightly grease an 8" inch cast iron skillet, set aside.
In a large bowl or the bowl of your stand mixer cream the peanut butter, butter, brown sugar and sugar until light and fluffy. Add in the egg and vanilla and mix until combined.
In a small bowl combine the flour, oats, baking powder powder, baking soda and salt. Add to the creamed mixture and mix just until combined. Add in the chocolate chunks, M&M's and peanuts or raisins. Mix just until combined.
Spread into prepared cast iron skillet. Bake 15-18 minutes or until lightly browned around the edge.
Notes
Storage: Once it cools, you can slice up the remains of your skillet cookie and store it in an airtight container at room temperature for up to a week.