"Warm up from the inside out with these Classic Stuffed Peppers from Delish.com...."
uncooked rice
extra-virgin olive oil, plus more for drizzling
medium onion, chopped
tomato paste
cloves garlic, minced
ground beef
(14.5-oz.) can diced tomatoes
dried oregano
Kosher salt
Freshly ground black pepper
bell peppers, tops and cores removed
shredded Monterey jack
Freshly chopped parsley, for garnish