Total Time: 1 hr 25 minPrep30 minCook55 minYield:8 servingsLevel:Easy Ingredients 1/4 cup olive oil 6 medium shallots, sliced into rings (about 1 cup) 1 1/2 pounds thin fresh string beans or haricots verts, trimmed 1 pound button mushrooms, sliced 6 large cloves garlic, minced 1 tablespoon chopped fresh thyme 3 cups low-fat (1 percent) milk 3 tablespoons all-purpose flour 1/3 cup plus 2 tablespoons freshly grated parmesan cheese 1/2 ...