Make-Ahead Potato-Onion Gratin Recipe - Pillsbury.com

Ingredients

• 2 tablespoons plus 1/4 cup butter or margarine
• 1 large onion, chopped (1 cup)
• 1 teaspoon kosher (coarse) salt
• 1/2 teaspoon ground black pepper
• 1 1/2 cups Progresso™ reduced-sodium chicken broth (from 32-oz carton)
• 1 1/2 cups whipping cream
• 15 cups frozen shredded hash brown potatoes (from two 30-oz bags)
• 1 cup finely shredded Parmesan cheese
• 3 cups soft white bread crumbs (about 4 slices bread)