Mouthwatering Instant Pot Spaghetti with Meat Sauce

Ingredients

• Grated Parmesan cheese, for serving
• 1 tablespoon olive oil
• 8 ounces dry spaghetti
• 1 small onion, finely chopped
• 1 pound ground beef
• 1 1/2 cups water
• 1 jar (24 ounces) marinara or tomato-based pasta sauce
• 1 teaspoon kosher salt
• 2 cloves garlic, minced