Potato-Leek Gratin | Publix Super Markets

Ingredients

• 2 medium leeks
• 1 (3 oz) package shallots
• 1/4 bunch fresh Italian parsley
• 1 (24 oz) package refrigerated mashed potatoes
• 3 tablespoons garlic-herb butter
• 1/2 cup dry white wine (or chicken broth)
• 2 cups Alfredo sauce
• 1/4 teaspoon kosher salt
• 1/4 teaspoon pepper
• 1/4 cup grated Parmesan cheese
• 1/2 cup panko bread crumbs