This recipe is courtesy of Cookingclassy.com via Pinterest.  Although the directions look a little time consuming, it’s actually a very simple recipe.  They go perfectly with a glass of milk.

Bars

• 1 1/2 cups all-purpose flour
• 1 teaspoon salt
• 1/2 teaspoon baking soda
• 1 1/2 cups quick oats
• 3/4 cup butter
• 1 cup packed light brown sugar
• 1/2 cup sugar
• 1 1/2 cup creamy peanut butter, divided
• 2 large eggs
• 1 teaspoon vanilla

Icing

• 1 stick of butter
• 2 tablespoons cocoa
• 1/4 cup milk
• 3 1/2 cups of powdered sugar
• 1 teaspoon vanilla

Preheat oven to 350 degrees. In a mixing bowl, whisk together flour, salt, and baking soda, then whisk in quick oats, set aside. In the electric stand mixer whip together butter, light-brown sugar and granulated sugar on medium-high speed until pale and fluffy, about 3-4 minutes. Blend in peanut butter. Stir in eggs one at a time, mixing after each addition until combine. Mix in vanilla. With mixer set on low speed, slowly add in dry ingredients and mix until combine. Spread mixture into an even layer into a 15 by 11-inch rimmed cookie sheet (it will be fairly thin once spread). Bake in preheated oven 13 – 15 minutes, until lightly golden. Remove from oven and allow to cool 5 minutes, then dollop remaining 3/4 cup peanut butter by the spoonfuls over peanut butter bars. Allow dolloped peanut butter to rest about 1 minute then carefully spread peanut butter into an even layer over top. Prepare chocolate frosting according to direction listed and spread over peanut butter layer. Allow to cool (if you can handle waiting) before cutting into squares. Store in a single layer in an airtight container at room temperature.

For the chocolate frosting

Melt butter in a medium saucepan over medium heat. Whisk in cocoa powder, then whisk in milk and bring mixture just to a boil. Once mixture reaches a boil, remove from heat and stir in vanilla extract. Add in powdered sugar and mix until well blended. Immediately pour frosting over peanut butter layer and spread into an even layer.