Stir flour and 2 tablespoons milk in a small bowl to make a smooth paste. Heat the remaining milk in a small heavy saucepan over medium heat until steaming. Whisk the flour paste into the hot milk and cook, whisking constantly, until thickened, about 1 minute. Remove from the heat and whisk in cottage cheese, Swiss cheese, salt and white pepper. Transfer the sauce to a food processor or blender and puree until smooth. Serve over steamed vegetables and top with Parmesan and breadcrumbs, if desired.
20 calories;1 g fat(0 g sat); 0 g fiber; 2 g carbohydrates; 2 g protein; 4 mcg folate; 3 mg cholesterol; 1 g sugars; 0 g added sugars; 23 IU vitamin A; 0 mg vitamin C; 38 mg calcium; 0 mg iron; 51 mg sodium; 28 mg potassium