1. Melt butter in a large pot along with oil. Add onions, carrots, celery, salt, pepper and nutmeg. Cook until the veggies are soft.\n2. Add the flour to the mixture and stir to make a roux.\n3. Slowly add chicken broth and milk and stir until thick and boiling.\n4. Reduce heat to low. Mix in broccoli. Add cheese and gently stir until melted.