Milk Chocolate-Peanut Butter Sandwich Cookies on BakeSpace.com

Ingredients

• 1 3/4 cups all purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup plus 1/3 cup powdered sugar
• 1/2 cup plus 1 tablespoon (packed) dark brown sugar
• 6 tablespoons butter, room temperature
• 1/2 cup creamy peanut butter
• 1/2 cup vegetable oil
• 1 1/2 teaspoons vanilla
• 1 large egg
• 1 1/3 cups chocolate chips
• Filling:
• 3 ounces milk chocolate chopped
• 1/4 cup creamy peanut butter
• 2 tablespoons powdered sugar
• 1/4 teaspoon salt
• 6 tablespoons whipping crea