Step 1

Slice the strawberries and place in a bowl. Then stir in 1/3 cup of sugar. Cover and place in the fridge.

Step 2

Prepare the brownies as directed on the box. Cool completely. Then cut into 1-inch squares.

Step 3

Beat the mascarpone cheese, whipping cream, vanilla, vinegar, and 1 cup of sugar until thickened. Cover and chill.

Step 4

To assemble, place 1/3 of brownie squares in the bottom of a 2 qt trifle dish, then cream mixture.

Step 5

With a slotted spoon top cream mixture with strawberries. Repeat, finishing with the cream mixture on top.

Step 6

Garnish the top with halved strawberries coated with sugar and mint sprigs (optional).

Step 7

Chill until ready to serve.