The Best Fresh Green Bean and Yellow Squash Casserole Recipe | Foodal

Ingredients

• 1 medium yellow squash, sliced into ⅛-inch half moons
• 1/4 cup olive oil, divided
• 2 teaspoons salt, divided
• 2 teaspoons freshly ground black pepper, divided
• 2 medium onions, chopped (2 cups)
• 4 1/4 cups chopped green beans
• 1 1/2 cups chopped green onions (white and green parts)
• 7 tablespoons unsalted butter, divided
• 4 slices firm white sandwich bread, coarsely ground in a food processor (about 2 1/4 cups crumbs)
• 1/4 cup all-purpose flour
• 1 3/4 cups reduced-sodium chicken or vegetable broth (14 fl oz)
• 1 cup sour cream