6 hard-cooked eggs, peeled
1 tablespoon diced green onions
1 tablespoon chopped fresh cilantro
1 small serrano or jalapeño pepper, seeded and finely chopped
1/4 cup mayonnaise
1 teaspoon prepared mustard
1/2 teaspoon salt
1/4 cup (1 ounce) shredded Cheddar cheese
Cut eggs in half crosswise; carefully remove yolks. Mash yolks, and stir in green onions and next 5 ingredients.
Spoon into egg whites; sprinkle with cheese and chili powder. Cover and chill.