Butternut Squash & Prosciutto Flatbread - Pepperidge Farm

Ingredients

• 2 tablespoons butter
• 1/2 small butternut squash, peeled, seeded and cut in half then cut crosswise into 1/8-inch-thick slices (about 3 cups)
• 0.333 cup chopped walnuts
• 2 teaspoons chopped fresh sage leaves
• 1/2 package of a 17.3-ounce package Pepperidge Farm® Puff Pastry Sheets(1 sheet), thawed
• 1.5 ounces (3 slices) prosciutto, cut into thin strips