Spinach and Ricotta Stuffed Shells with Spicy Chorizo

INGREDIENTS

3 oz

Spinach or chard

1 28 ounce can

Tomatoes

Yellow onion, medium

Egg, large

12 oz

Pasta shells, jumbo

1 1/2 tsp

Granulated sugar

Kosher salt and freshly ground black pepper

1 tbsp

Olive oil plus more

1 cup

Low-moisture mozzarella

1 15 ounce container

Whole milk ricotta cheese

8 ounces fresh chorizo or spicy pork sausage removed from casing and crumbled