INGREDIENTS
2 tbsp
extra-virgin olive oil
1 lb
sweet or hot Italian sausage, casings removed
5
garlic cloves, 3 thinly sliced, 2 finely grated
1/2 tsp
dried oregano
1/4 tsp
crushed red pepper flakes (optional)
1 28 ounce can
crushed tomatoes
3 tsp
kosher salt, divided, plus more
1 5 ounce package
baby spinach, coarsely chopped
2 15.5 ounce cans
white beans, rinsed
4 tbsp
unsalted butter
1
12" crusty Italian sub roll, cut in half crosswise, split lengthwise, or 2 ciabatta rolls, split lengthwise
1 oz
Parmesan or Pecorino, finely grated
Chopped parsley (for serving; optional)