Peanut Butter Oatmeal Chocolate Chip Skillet Cookie

Ingredients

• unsalted butter, room temperature
• packed brown sugar
• white granulated sugar
• eggs
• teaspoon vanilla
• teaspoon baking soda
• teaspoons cinnamon
• teaspoon salt
• all purpose flour
• oats
• chocolate chips
• creamy peanut butter, divided
• Hershey milk chocolate bars