Nutella Toffee Whoopie Pies

Ingredients:
· 1 box chocolate cake mix
· ½ cup vegetable oil
· 2 eggs
· ¼ cup water
· 1 (13-ounce) jar Nutella
· 1 ½ cups toffee pieces

Directions:
1. Preheat oven to 350 degrees.
2. Combine cake mix, oil, eggs and water in a medium bowl. Mix with electric mixer just until the ingredients are well incorporated.
3. Drop by 2 tablespoons batter onto parchment-lined cookie sheet, leaving about an inch between each cookie.
4. Bake for 9-10 minutes. Cool on baking sheet for about 5 minutes then move to a wire rack and cool 20 more minutes.
5. On half of the cookies, spread about a tablespoon of Nutella in the center. Sprinkle with toffee pieces and top with another cookie. Sprinkle toffee bits on top and sides of each pie.