Instant Pot Ziti “Lasagna” with Bolognese Sauce

INGREDIENTS

Egg, large

2 cups

Bolognese sauce, homemade or store-bought

1/2 lb

Ziti or penne, dried

Kosher salt and freshly ground pepper

2 cups

Mozzarella, grated

1/2 cup

Parmesan cheese

1 cup

Ricotta cheese

¼ cup chopped or chiffonaded (thinly sliced) fresh basil, plus more to serve