For the shells
01 -
20-24 jumbo pasta shells, plus a few extra for breakage
02 -
1 tablespoon olive oil, plus more for the cooled shells
03 -
1 teaspoon kosher salt for the pasta water
For the beef ricotta filling
04 -
1 lb (450 g) lean ground beef
05 -
1 small yellow onion, finely diced
06 -
3 cloves garlic, minced
07 -
15 oz (425 g) whole-milk ricotta cheese
08 -
1 large egg
09 -
1 cup (115 g) shredded mozzarella cheese
10 -
1/2 cup (50 g) grated Parmesan cheese
11 -
2 tablespoons chopped fresh parsley
12 -
1 teaspoon Italian seasoning
13 -
1/2 teaspoon kosher salt
14 -
1/4 teaspoon black pepper
For the sauce and topping
15 -
24 oz (680 g) marinara sauce
16 -
1/2 cup (120 ml) heavy cream
17 -
1 1/2 cups (170 g) shredded mozzarella cheese
18 -
1/4 cup (25 g) grated Parmesan cheese
19 -
2 tablespoons chopped fresh basil or parsley, for serving