INGREDIENTS
2 tbsp
all-purpose flour
1/2
of a 17.3-ounce package Puff Pastry Sheets (1 sheet), thawed
1 tbsp
vegetable oil
1
medium onion, cut in half and sliced (about 1 cup)
6 oz
frozen beef sandwich steak (4 portions), cut into thick strips
4
slices processed American cheese food product
1
egg, beaten