01 - Melt butter in large saucepan over medium heat. Add chopped onion and cook 4–5 minutes until softened but not browned.
02 - Stir in minced garlic and cook 1 minute, stirring frequently to prevent burning.
03 - Add peas to saucepan and cook 2 minutes, stirring occasionally.
04 - Pour in vegetable broth and bring to simmer. Cook 8–10 minutes until peas are completely tender.
05 - Remove from heat. Stir in fresh mint leaves and let steep 2–3 minutes.
06 - Blend soup with immersion blender until completely smooth and silky. Alternatively, purée in batches using countertop blender.
07 - Return soup to pan if necessary. Stir in milk and crème fraîche. Gently reheat over low heat without boiling. Season with salt and pepper to taste.
08 - Ladle soup into bowls. Swirl extra crème fraîche on top and garnish with fresh mint leaves and freshly ground black pepper.