Cheesy Ranch Chicken and Rice Casserole

Name: Cheesy Ranch Chicken and Rice Casserole
Prep time: 15 min
Cook time: 1 h 20 min
Total time: 1 h 35 min
Cuisine: American
Ingredients: 3 Tablespoons Butter; 1/2 Cup Minced Mushrooms; 1 Clove Garlic (minced); 1/4 Cup Flour; 2 Tablespoons Ranch Seasoning Mix; 1 Cup Milk; 1/2 Cup Chicken Broth; 2 Cups Cooked Chicken (chopped); 1 Cup Sliced Carrots (heaping, steamed); 1 Cup Broccoli (heaping, steamed); 1 Cup Chicken Broth; 1 Cup Water; 1 Cup White or Brown Rice; 1 Cup Frozen Peas *optional; Salt and Pepper to taste; Colby Jack or Cheddar Cheese (sliced (about 9-12 slices))