Easy Chicken and Rice Casserole Recipe

Ingredients

• 1 tablespoon butter
• 1 medium onion, diced
• 1 clove garlic, minced
• 4 carrots, finely diced
• 4 stalks celery, sliced
• 1 rotisserie chicken, shredded
• 1 cup uncooked long grain white rice
• 1 can cream of chicken soup
• 3 cups chicken stock
• Salt, to taste
• Pepper, to taste
• Breadcrumbs, optional