1In medium bowl, place strawberries. Sprinkle with 3 tablespoons powdered sugar; let stand 10 minutes. Crush with potato masher or spoon; set aside.
2In large bowl, beat whipping cream with whisk attachment of electric mixer on low speed until stiff peaks form.
3In medium bowl, beat cheese, 1/2 cup powdered sugar and the vanilla with electric mixer on medium speed until combined. Fold in whipped cream, then fold in mashed strawberries.
4Line bottom of 13x9-inch pan with single layer of graham crackers. Spread one-third of the strawberry-cream mixture over crackers; sprinkle with 1/3 cup of the chocolate chips. Repeat layers twice. Refrigerate 2 hours before serving.