01 - Set the Instant Pot to Sauté mode. Melt butter, then add diced onion and cook for 2–3 minutes until softened. Add minced garlic and cook for 30 seconds until fragrant.
02 - Sprinkle flour into the pot and stir constantly for 1 minute to form a smooth roux, cooking out the raw flour taste.
03 - Gradually pour in vegetable broth while whisking continuously to prevent lumps from forming.
04 - Stir in broccoli florets and grated carrot. Season with paprika, nutmeg, salt, and pepper.
05 - Seal the lid and set to Manual High Pressure for 5 minutes.
06 - Perform a quick release to release steam immediately. Open the lid and give the soup a stir.
07 - Use an immersion blender to puree the soup to your preferred consistency, whether completely smooth or slightly chunky.
08 - Set Instant Pot to Sauté Low. Stir in milk and cream. Gradually add shredded cheddar cheese, stirring continuously until fully melted and smooth.
09 - Taste the soup and adjust salt and pepper as needed. Serve hot with additional cheddar or fresh herbs for garnish.