Cheesy Potato Casserole

Ingredients (15)

• 5 Pounds Russet Potatoes , peeled and sliced thin
• 1 Yellow Onion , minced
• 8 Cloves Garlic , minced
• 4 Tablespoons Unsalted Butter
• 1/4 Cup All-Purpose Flour
• 1 Dash Nutmeg
• 1 1/2 Cups Chicken Broth (vegetable works too)
• 1 1/2 Cups Heavy Cream
• 1 Tablespoon Salt
• 1 Teaspoon Freshly Ground Black Pepper
• 1 Teaspoon Montreal Chicken Seasoning
• 8 Ounces Tillamook Sour Cream
• 2 1/4 Cups Tillamook Farmstyle Thick Cut Shredded Cheddar Jack Cheese
• 2 1/4 Cups Tillamook Farmstyle Thick Cut Shredded Sharp Cheddar Cheese
• 1 Cup Freshly Grated Parmesan