Roasting the poblano peppers imparts a smokiness to the sauce. Poblano peppers are not traditionally known for being hot. However, if you look for older peppers (darker red and black skins with striations) they will have more heat. You can control the spice in this recipe by adding more or less poblanos or even other types of peppers for more heat. Many dairy-free macaroni and cheese recipes use vegan cheeses. My goal with this recipe was to create a plant-based macaroni and