Make-Ahead Scrambled Eggs in Puff Pastry

(Found here along with a fruit salad and blueberry almond muffins)

•1 sheet frozen puff pastry, thawed
•3 tablespoons butter, divided

•2 tablespoons grated Parmesan cheese

•10 eggs

•1/4 cup heavy cream

•3/4 cup bottled Alfredo sauce

•1/2 teaspoon salt

•1/8 teaspoon pepper

•1 cup shredded Swiss or Colby cheese