Scalloped Vegetable Casserole Recipe

Ingredients (11)

• 1 1/2 cups carrots (sliced)
• 1 1/2 cups celery (sliced)
• 1 1/2 to 2 cups peas (frozen)
• 7 tablespoons butter (divided)
• 8 ounces mushrooms (sliced)
• 4 tablespoons flour (all-purpose)
• 1/2 teaspoon mustard (dry)
• 2 cups milk
• Optional: salt and black pepper (freshly ground, to taste)
• 1 cup breadcrumbs (fine, fresh)
• Optional: grated Parmesan or other cheese