Ingredients
2 cups thinly sliced red onions 2 tablespoons red wine vinegar 1 teaspoon sugar
4 large soft whole grain rolls, toasted
1/2 cup crumbled blue cheese
12 tomato slices
8 ounces thinly sliced roast beef
2 cups (packed) small watercress sprigs
Preparation
Combine onions, vinegar, and sugar in medium bowl; sprinkle with salt and pepper. Let stand until onions are soft, tossing occasionally, at least 1 hour and up to 4 hours.
Place bottom halves of rolls on work surface. Sprinkle with cheese. Top each with 3 tomato slices, then 1/4 of roast beef. Top each with 1/2 cup watercress, then 1/4 of pickled onions. Cover with tops of rolls. Cut each sandwich in half.
Per serving: calories, 341; total fat, 11 g; saturated fat, 5 g; cholesterol, 67 mg
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