Broccoli Cheddar Soup

Ingredients (11)

• 2 tbsp olive oil
• 2 tbsp unsalted butter
• 1 leek
• 1 carrot
• 1 celery rib
• 1 garlic clove
• 1 approx 1 bl head broccoli
• 1/4 cup all-purpose flour
• 6 cups chicken stock
• 2 cups sharp cheddar cheese
• Kosher salt and freshly ground black peper