Instant Pot Meatballs with Marinara

Ingredients

• 1 pound ground beef
• 1 pound ground pork
• 2/3 cup panko bread crumbs
• 1/4 cup grated Parmesan cheese
• 1 large egg, lightly beaten
• 1/4 cup finely chopped onion
• 2 garlic cloves, minced
• 1-1/2 teaspoons Italian seasoning
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 1 jar (24 ounces) marinara sauce