Spiced Turkey Breast

Name: Spiced Turkey Breast
Ingredients: 1/4 cup whole-grain mustard (recommended: Maille); 2 garlic cloves, minced; 2 teaspoons ground cumin; 1 tablespoon dried oregano; 1 teaspoon allspice; 2 teaspoons chili powder; 1 tablespoon brown sugar; 1 teaspoon extra-virgin olive oil; 1 (4 1/2 to 5-pound) turkey breast, on the bone, rinsed and patted dry with paper towels; 10 cipollini onions; 3 medium carrots, peeled, and cut into 2-inch pieces; 2 cups low-sodium chicken stock; 2 tablespoons all-purpose flour; Salt and freshly ground black pepper, for seasoning