Instant Pot Pasta Garlic Chicken

Ingredients

• 3 tbsp unsalted butter
• 2 pounds boneless skinless chicken breast, cut into small one inch cubes
• 3 tbsp minced garlic
• 2 tsp cornstarch
• 2 tsp dried oregano
• 2 cups chicken stock
• 1 cup heavy cream
• 1/2 cup whole milk
• 4 cups dried rotini pasta
• 2 cups frozen mixed vegetables
• 1/2 tsp salt
• 1/2 tsp black pepper
• 1 cup grated Parmesan cheese