Bake Sale Peanut Butter Oat Bars

Bahan-bahan (24 porsi)

• 2 sticks (1 cup) salted butter, at room temperature
• 1 cup creamy peanut butter
• 1 cup brown sugar
• 2 large eggs, at room temperature
• 1 tablespoon vanilla extract
• 2 cups all-purpose flour
• 2 cups old fashioned oats
• 1 teaspoon baking soda
• 1 teaspoon salt
• 1 1/2 cups creamy peanut butter
• 2 cups powdered sugar
• 2 tablespoons unsweetened cocoa powder
• 1 tablespoon vanilla extract
• 2 ounces dark or milk chocolate melted