Instant Pot Creamy Chicken Florentine Pasta

Ingredients

• 2 tbsp olive oil
• 2 large boneless skinless chicken breasts cut into 1 inch cubes
• 2 cups sliced brown mushrooms
• 1 medium onion diced
• 1/2 stick unsalted butter (2oz)
• 2 cups chicken stock
• 1 cup heavy cream
• 1 tsp dried oregano
• 1 pinch salt and black pepper
• 2 cups bowtie pasta (farfalle)
• 1 cup grated Parmesan plus extra for garnishing
• 1 large handful of prewashed spinach leaves