Sweet Potatoes Au Gratin

Ingredients (10)

• 2 pounds sweet potatoes
• 1 tablespoon butter
• 2 garlic cloves
• 4 oz cream cheese
• 1/4 cup heavy whipping cream
• 1 cup shredded cheddar cheese
• 1/4 cup shredded parmesan reggiano cheese
• 1 teaspoon onion powder
• salt and pepper to taste
• 1/2 cup shredded mozzarella cheese