Banana Chocolate Chip Shortbread Icebox Cake

Ingredients

• 2 boxes (4.9 ounces each) Walker's Gluten Free Chocolate Chip Shortbread
• 1 box (3.4 ounces) instant banana pudding mix
• 1 1/2 cups nonfat milk
• 1 (8 ounce) container Cool Whip (light or fat-free is fine), or 2 cups of freshly whipped cream
• 1 medium banana, sliced (plus more for garnish, if desired)
• Mini Chocolate Chips, for garnish, optional