Old-Fashioned Peanut Butter Cake Recipe - A Sweet Throwback - Zest Plate

Ingredients

• 2 cups all-purpose flour
• 2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup unsalted butter, softened
• 1 cup creamy peanut butter
• 1 cup granulated sugar
• 1 cup brown sugar, packed
• 2 large eggs
• 1 teaspoon vanilla extract
• 1 cup buttermilk
• 1/2 cup creamy peanut butter
• 3 cups powdered sugar
• 1/4 cup milk