INGREDIENTS
2 tbsp
unsalted butter
1 lb
ground 90% lean beef
1/4 tsp
black pepper
1 tsp
kosher salt
8 oz
uncooked elbow macaroni
2 cups
whole milk
1 1/4 cups
warm water
1/4 tsp
dry mustard
1/4 tsp
paprika
1/4 tsp
garlic powder
1
⁄8 teaspoon cayenne pepper
1 1/2 cups
shredded sharp Cheddar cheese
1/2 cup
chopped American cheese
2 tbsp
thinly sliced fresh chives
1/4 cup
panko (Japanese-style breadcrumbs)
1
scallion, green part sliced