| One 9-ounce box chocolate wafer cookies, finely crushed |
| 2 pounds cream cheese, at room temperature |
| 1 1/2 cups granulated sugar |
Seeds from 2 vanilla beans, or 1/2 teaspoon vanilla extract
Butter (for greasing pan) |
| 3/4 cup sour cream (optional) |
| Sliced fresh strawberries and/or pureed strawberry sauce |