Peanut Butter Cup Sheet Cake

Ingredients

• ***For the cake:***
• 2 cups flour
• 2 cups sugar
• 1/4 teaspoon salt
• 2 sticks butter
• 1/2 cup creamy peanut butter
• 1 cup boiling water
• 1/2 cup buttermilk
• 2 eggs, beaten
• 1 teaspoon baking soda
• 1 teaspoon vanilla
• ***For the frosting:***
• 1 3/4 sticks butter
• 4 heaping tablespoons cocoa
• 6 tablespoons milk
• 1 teaspoon vanilla extract
• 1 pound minus 1/2 cup powdered sugar
• 1/2 cup pecans, finely chopped