Macaroni and cheese is, undoubtedly ... crushed saltines or Ritz crackers work beautifully as a topping. Or, saute breadcrumbs or crushed crackers (Cheez-Its or otherwise) in melted butter ...
Add the garlic, sprouts and a pinch of salt and fry for 5 minutes. Scatter the topping over the mac and cheese before serving. If you don't use it already, nutritional yeast is a "cheesy" substitute.