Instant Pot Potato Soup

Ingredients (15)

• 2 tablespoons unsalted butter
• 1 small yellow onion
• 2 cloves garlic
• 3 cups water
• 1 tablespoon chicken bouillon
• 1 ½ pounds Yukon gold potatoes
• 1 small head of cauliflower
• 2 teaspoons spicy brown mustard
• ½ teaspoon dried thyme
• ½ teaspoon ground black pepper
• 1 cup 2% plain Greek yogurt
• 1/2 cup shredded sharp cheddar cheese
• 1/4 cup grated Parmesan cheese
• Chopped fresh chives
• Croutons