Casserole, Green Bean and Mushroom II

Ingredients

• 3 large shallots, sliced thin (about 1 cup)
• Salt and ground black pepper
• 3 tbsp. all-purpose flour
• 5 tbsp. vegetable oil
• 10 ounces Cremini mushrooms, stems discarded, caps wiped clean and sliced 1/4" thick
• 2 tbsp. unsalted butter
• 1 medium onion, minced (about 1 cup)
• 2 medium cloves garlic, minced or pressed through garlic press
• 1-1/2 pounds green beans, stem ends trimmed
• 3 sprigs fresh thyme
• 2 bay leaves
• 3/4 cup heavy cream
• 3/4 cup vegetable broth