Pistachio Pudding Cake Recipe for St. Paddy’s Day

Ingredients
- 1 package yellow cake mix (regular size)
- 1 package (3.4 ounces) instant pistachio pudding mix
- 4 large eggs
- 1 cup club soda
- 1/2 cup canola oil
- 1/2 cup chopped walnuts
- ICING:
- 1 cup cold heavy whipping cream
- 3/4 cup cold 2% milk
- 1 package (3.4 ounces) instant pistachio pudding mix
- 2 teaspoons confectioners’ sugar
- 1/2 cup chopped walnuts