Method

1. Whisk milk and pudding mix in a large bowl for 2 minutes. Let stand for 2 minutes or until soft set.
2. Whisk in Nutella until smooth.
3. Fold in whipped topping. Chill until serving.  Yields 24, 2/3-cup servings
4. Prepare 16x12x1-inch sheet pan (half sheet) by lightly greasing or spraying with non-stick cooking spray.
5. Cut open one end of pouch and squeeze batter into prepared pan.
6. Spread batter with spatula until even.
7. For convection oven, bake at 325°F 27-32 minutes; for standard oven, bake at 375°F 36-41 minutes.
8. Allow brownies to cool completely before cutting.
9. Place brownie on serving dish. Pipe 4 swirls of Hazelnut Mousse (recipe below) on.