| 3/4 cup plus 1 tablespoon sugar |
| 2/3 cup butter, chopped into small pieces |
| 1 teaspoon vanilla extract |
| 3/4 cup plus 1 tablespoon sour cream or creme fraiche |
| 1 1/4 cups chopped pecans |
| 1 teaspoon ground cinnamon |
| 2 tablespoons light brown sugar |
| Melted butter, for glazing, if desired |