Blueberry mascarpone tart

Serves 6-8 people 
Prep time - 20 min 
Ingredients :
For the crust 
1.Cookies - 3 cups
2.Sugar- 45g
3.Butter-76g
4.Salt- 1 pinch

For the filling 
1.Mascarpone cheese -1 1/2 cups (or) 400 g
2.Egg- 2
3.Vanilla essence- 1 tsp
4.Confectioners sugar -1 heaped tbsp
5.Blueberry preserve- 100 g

Procedure:
To make the crust 
1. Crush the cookies in a blender till you get a coarse powder .
2. Add the butter, sugar and salt to the cookie powder and mix well.
3.Spread out the above mixture on the base of a tart pan evenly.
4. Now refrigerate the crust for an hour.

To make the filling 
1. Beat the egg whites into soft peaks in a bowl.
2.Now take a different bowl and beat the mascarpone cheese and add the vanilla essence and sugar and beat till you get a creamy yellow consistency.
3.Now fold in the egg whites into the mascarpone mixture .
4.Take out the crust from the fridge and spread out the above mixture onto the crust .

5. Top the mixture with blueberry preserve and refrigerate for 30 min.