Smoked Gouda Sweet Potatoes - Yummy Gusto

Ingredients

• 3 pounds of sweet potatoes, peeled and sliced thin into 1/8-inch circles
• 2 red onions, medium size, sliced thin
• 1/2 tablespoon of fresh rosemary, chopped roughly
• 8 ounces of asiago cheese, shredded
• 8 ounces of smoked gouda, shredded
• 2 teaspoons of garlic powder
• 1/4 teaspoon of ground sage
• 1/4 teaspoon of salt
• 1 teaspoon of smoked paprika
• 1/4 teaspoon of freshly cracked black pepper
• 4 tablespoons of melted butter
• 2 cups of whole milk
• 1/4 cup cornstarch
• 1/2 cup heavy cream
• 1 cup sour cream