Instant Pot Potato Leek Soup with Spinach and Parmesan - Yay! For Food

Ingredients

• 2 tbsp (1 oz) unsalted butter
• 1 tbsp olive oil
• 3-4 leeks (12 oz), light green and white parts, rinsed thoroughly and chopped
• 3 celery ribs, chopped
• 1 small onion, chopped
• 2 garlic cloves, minced
• 3-4 russet potatoes (2.5 lb), peeled and chopped
• 2½ cups chicken broth (or vegetable broth)
• 2 bay leaves
• 1 tsp dried thyme
• 1 tsp dried rosemary
• Salt and pepper, to taste
• 2 cups (packed) baby spinach
• ½ cup (2 oz) parmesan cheese (parmigiano reggiano), finely chopped/grated *(see first note)
• Optional topping: bacon crumbles