Instant Pot Stuffed Peppers: Speedy Comfort Food!

Ingredients

• 1 tablespoon olive oil (15 ml)
• 1 pound ground beef (450g) (80/20 blend recommended)
• 1 medium yellow onion, finely chopped (approx. 1 cup) (approx. 150g)
• 2 cloves garlic, minced (approx. 2 teaspoons) (approx. 6g)
• 1 teaspoon dried oregano (5 ml)
• 1 teaspoon dried basil (5 ml)
• 1/2 teaspoon salt (2.5 ml)
• 1/4 teaspoon black pepper (1.25 ml)
• 1 (14.5 ounce) can diced tomatoes, undrained (411g)
• 1 (8 ounce) can tomato sauce (227g)
• 1 cup cooked white rice (200g) (long-grain or medium-grain)
• 4 medium bell peppers (various colours), tops removed and seeded (approx. 600-800g total)
• 1/2 cup shredded mozzarella cheese (50g) (optional)
• 1 cup beef broth (240ml)