1 tablespoon olive oil
1 pound ground beef
1 onion, diced
2 cloves garlic, minced
1 (28-ounce) can crushed tomatoes
1 (10-ounce) can diced tomatoes and green chiles, undrained
1/2 teaspoon dried oregano
1/2 teaspoon dried basil
1/4 teaspoon crushed red pepper flakes, optional
Kosher salt and freshly ground black pepper, to taste
1 (9-ounce) package refrigerated three cheese tortellini
1 cup shredded mozzarella cheese
1/2 cup shredded cheddar cheese
2 tablespoons chopped fresh parsley leaves