Peanut Butter Crackers With Glazed Grapes

Name: Peanut Butter Crackers With Glazed Grapes
Ingredients: 1/2 cup all-purpose flour, plus more for dusting; 1/4 cup whole-wheat flour; 3 tablespoons rolled oats; 1 tablespoon packed light brown sugar; 1/2 teaspoon fine salt; 3 tablespoons cold unsalted butter, cut into small pieces; 2 tablespoons finely chopped salted roasted peanuts; 1/4 cup peanut butter (creamy or crunchy); 2 tablespoons milk; 3 tablespoons granulated sugar; 1/2 cup dry red wine; 1 small sprig thyme; 15 large seedless red grapes, halved; Pinch of kosher salt; 1/3 pound brie, camembert or other soft cheese, at room temperature; Freshly ground pepper (optional)