Fresh Green Bean and Mushroom Casserole

Ingredients (11)

• + 1 ½ pounds fresh green beans, trimmed and cut into bite-size pieces add to pantry
• ✓ 2 tablespoons butter or margarine
• ✓ 3 tablespoons all-purpose flour
• + 1 tablespoon ranch dressing mix add to pantry
• + ¼ teaspoon ground white pepper add to pantry
• + 1 ½ cups fat-free milk add to pantry
• + cooking spray add to pantry
• + 1 cup chopped onion add to pantry
• ✓ 2 cloves garlic, minced
• + 1 ½ cups sliced fresh mushrooms add to pantry
• + 1 cup panko bread crumbs add to pantry