Keto Low-Carb Instant Pot Copycat Panera Broccoli Cheddar Soup

Ingredients (9)

• 2 tablespoons butter, divided
• 1 cup chopped onion
• 2-3 garlic cloves, chopped
• 2 cups stock or broth
• salt and pepper to taste
• 4 cups chopped fresh broccoli florets (with stems)
• 1/2 teaspoon xanthan gum
• 2 cups heavy cream
• 2 cups sharp shredded cheddar cheese