Vegan Macaroni & "cheese"

• 2 chives
• 1 dijon
• 300 gr elbow macaroni (cooked)
• 240 ml vegetable broth (cold)
• 110 gr tofu cheddar (shredded)
• 60 ml dry sherry
• 55 gr bread crumbs (toasted)
• 3 gr cornstarch
• 2 slices green onions
• 2 slices tomatoes (plum)