Instant Pot Creamy Baked Ziti | Umami

Ingredients

• 2 teaspoons olive oil
• ½ cup diced onion
• 1 pound ground sirloin
• 1 ½ teaspoons kosher salt
• 1 teaspoon minced garlic
• 1 teaspoon black pepper
• 3 cups unsalted chicken stock
• 1 cup heavy cream
• 1 pound uncooked ziti pasta
• ⅓ cup water, if needed
• 2 cups marinara sauce
• 1 (8-oz.) pkg. pre-shredded mozzarella cheese (about 2 cups), divided
• Fresh basil leaves