Heat oven to 350 degrees F. In blender container, blend strawberries until smooth.
In blender container, blend strawberries until smooth. In saucepan, combine strawberry puree and cornstarch; cook and stir until thickened. Cool.
Combine graham crumbs and butter in small bowl; press firmly on bottom of greased 13x9-inch baking pan.
In large bowl, beat cream cheese until fluffy. Gradually beat in sweetened condensed milk until smooth. Add eggs, lemon juice and vanilla; mix well. Pour over crust.
Drop strawberry mixture by spoonfuls over batter. Gently swirl with a knife or spatula.
Bake 25 to 30 minutes until center is set. Cool. Cut into bars. Chill. Store leftovers covered in refrigerator.