1. Preheat oven to 350°.
2. Combine first 4 ingredients in a small bowl, stirring with a fork. Slice dates lengthwise, cutting to, but not through, other side. Open dates; place 1 rounded teaspoon cheese mixture into each date. Cut 1 prosciutto slice in half lengthwise and then crosswise to make 4 equal pieces. Repeat procedure with remaining prosciutto to form 24 pieces. Wrap each date with 1 prosciutto piece; place dates on a baking sheet lined with parchment paper. Bake at 350° for 8 minutes or until filling is thoroughly heated. Serve immediately.