Cheesy Beef & Potato Casserole

Name: Cheesy Beef & Potato Casserole
Prep time: 5 min
Cook time: 1 h 30 min
Total time: 1 h 35 min
Cuisine: American
Ingredients: 1 Can Cream of Mushroom Soup; 2 Large Russet Potatoes (peeled and sliced); 1 Cup Milk; 1 Cup Carrots (sliced); 1 Pound Ground Beef (cooked); ½ Onion (minced); Cheddar or Colby Jack Cheese (sliced about 9 pieces); 3 Tablespoons Unsalted Butter; ¼ Cup Onion (minced); 1 Clove Garlic (minced); ½ Cup White Button Mushroom (minced ); 3 Tablespoons Flour; ½ Cup Cream; ½ Cup Chicken Broth; ¼ teaspoon Freshly Ground Black Pepper; 1-2 teaspoons Salt; ¼ teaspoon Salt; ¼ teaspoon Garlic Powder; Cheddar or Colby Jack Cheese (sliced (about 9 slices))