INGREDIENTS
1
pkg. (17.3 ounces) Puff Pastry Sheets, thawed
1/2 tbsp
extra-virgin olive oil
1/2
medium sweet onion, chopped finely
1
small Granny Smith apple, chopped finely
4 tbsp
Grey Poupon Savory Honey Mustard
2
pre-cooked English sausages (bangers)- or any other type of pre-cooked sausage, sliced
1 cup
shredded Gouda cheese
1
large egg whisked with 1 tablespoon water