Parmesan Crusted Scalloped Potatoes

Ingredients (15)

• For the Potatoes:
• 2 tablespoons unsalted butter
• 1 small yellow onion
• 2 cloves garlic
• 2 cups heavy cream
• 1/2 cup low-sodium vegetable broth
• 1 1/2 teaspoon kosher salt
• 1/2 teaspoon ground black pepper
• 2 pounds russet potatoes
• 1 1/2 cups shredded Cheddar cheese
• 1 cup shredded Gruyere cheese
• For the Parmesan Panko Topping:
• 4 tablespoons melted butter
• 3/4 cup Panko bread crumbs
• 1/2 cup freshly grated Parmesan cheese