Green Bean Casserole

Ingredients

• 1 1/2 pounds fresh green beans
• 2 tbsp butter
• 3 tbsp all-purpose flour
• 1/4 tsp ground white pepper
• 1 tbsp dry ranch salad dressing mix
• 1 1/2 cups fat-free milk
• 1 cup chopped onion
• 2 cloves garlic, minced
• 1 1/2 cups sliced mushrooms
• 1 cup soft whole-wheat bread crumbs