For the peppers
01 -
4 large bell peppers, red, yellow, or orange
02 -
1 tablespoon olive oil
03 -
1 small yellow onion, finely chopped
04 -
3 cloves garlic, minced
05 -
1 lb (450 g) lean ground beef
06 -
1 teaspoon kosher salt
07 -
1/2 teaspoon black pepper
08 -
2 teaspoons Italian seasoning
09 -
1/4 teaspoon crushed red pepper flakes, optional
For the filling and topping
10 -
1 1/2 cups (250 g) cooked white rice
11 -
1 1/2 cups (360 ml) marinara sauce, divided
12 -
1/2 cup (50 g) grated Parmesan cheese, divided
13 -
1 1/2 cups (170 g) shredded mozzarella cheese, divided
14 -
2 tablespoons chopped fresh basil or parsley, plus more for serving