Cheesy Chicken and Wild Rice Casserole

Ingredients

• 3 tablespoons olive oil
• 1 white onion, diced
• 3 stalks celery, diced
• 3 carrots, diced
• 2 tablespoons garlic, minced
• 2 cups cooked chicken breast, shredded
• 1 cup white rice
• 16 ounces wild rice
• 3 tablespoons butter
• 1/4 cup whole wheat flour
• 1 cup vegetable broth
• 4 cups cheddar cheese, shredded
• Garlic salt
• Salt & pepper