Ingredients
Method
- Toast the bread lightly on one side under the broiler and let it cool for 2 minutes.
- Stir the mayonnaise with horseradish and spread it over the toasted faces.
- Fold the roast beef loosely over two slices and add cheddar.
- Top with dry arugula and well-drained pickled onions.
- Close the sandwiches, cut in half and serve.