3 roast beef potato vinaigrette Recipes

peeled, diced (1/2 inch) cooked potatoes, diced (1/2 inch) medium-rare leftover roast beef, mixed diced (1/4 inch) red and green bell peppers, diced (1/4 inch) red onion, scallions, thinly sliced, chopped parsley, salt and pepper, to taste, your favorite vinaigrette, boston lettuce leaves , for serving

red potatoes, each cut into 8 wedges, water, red onion, thinly sliced, roast beef, grape tomatoes , cut in half lengthwise, romaine lettuce , torn, white wine vinegar, salt, fresh ground black pepper, dijon mustard, olive oil , extra virgin, blue cheese, crumbled