French Bean “Casserole” — Three Many Cooks

Ingredients

• 1 pound green beans
• Salt
• 2 tablespoons butter
• 2 tablespoons olive oil, divided
• 1 medium yellow onion, peeled, halved and sliced thin
• 3 medium garlic cloves, minced
• ½ pound shitake mushrooms, stemmed and sliced thin
• ½ pound cremini cleaned and sliced thin
• 1 cup chicken (or vegetable) broth
• ½ cup sour cream
• 2 tablespoons each: chopped fresh parsley and tarragon
• 1 cup fresh breadcrumbs
• ¼ cup chopped Marcona almonds
• 1 teaspoon finely grated lemon zest
• Ground black pepper