smoked sausage and squash casserole

Ingredients

• 1 pound hickory smoked sausage
• 4 medium potatoes, cubed (peeling optional)
• 2 - zuccini, small to medium in size
• 2 - yellow squash, small to medium in size
• 1 small onion, diced (or half a regular onion)
• 2 cups shredded sharp cheddar
• 2 1/2 cups chicken stock
• 8 ounces baby portebello mushrooms, sliced
• 3 1/2 tablespoons cornstarch
• 1 tablespoon parsley flakes
• 1 teaspoon ground mustard (dry)
• 1 1/2 teaspoons salt
• 1 teaspoon roasted garlic powder (or fresh)
• 1/2 teaspoon tumeric
• 1/2 teaspoon black pepper
• 1/2 teaspoon dried oregano
• 1/4 teaspoon celery seeds