Divide the crumbs or brownie chunks between 4 to 6 individual cups.
In a large bowl, with a hand mixer, beat the cream cheese and Nutella until smooth. Add vanilla and salt, mix to combine.
In a medium bowl, with a hand mixer, beat the heavy cream until stiff peaks form. Using a spatula, fold the whipped cream into the Nutella mixture until combined.
Pipe or spoon the filling on top of the bottom layer. Refrigerate for 1 hour before serving.
Before serving, add strawberries and whipped cream.
If desired, garnish with chocolate shavings, mini chocolate chips, or chocolate sauce.