2 tbsp butter
Generous 1 cup grated Gruyere cheese
2 scallions, finely chopped
Salt and pepper
1 tbsp chopped fresh parsley
2 fresh bagels
Trim the leeks, discarding the green ends, and split down the center, leaving the root intact. Wash well to remove any grit and slice finely, discarding the root.
Melt the butter over low heat in a large sauté pan and add the leeks. Cook, stirring constantly, for 5 minutes, or until the leeks are soft and slightly browned. Let cool.
Preheat the broiler. Mix the cooled leeks, grated cheese, scallions, parsley, and salt and pepper to taste together. Split the bagels and toast lightly on the bottom. Spread the cheese mixture over the top of each bagel and place under the preheated broiler until bubbling and golden brown. Serve at once.