Roast Beef Sandwiches
Serves 6
3 large red onions, cut into 6 wedges and peeled
7 tbsp extra virgin olive oil, divided
1/4 cup balsamic vinegar
salt and pepper to taste
1 cup mayonnaise
1/4 cup fresh basil leaves, chopped
1 1/2 tbsp fresh lemon juice
2 1/4 tsp grated lemon peel
6 ciabatta buns, cut in half
1 lb roast beef, thinly sliced
lettuce
Preheat oven to 425. Line large baking sheet with foil.
Gently toss red onions, 5 tbsp oil and vinegar in large bowl. Sprinkle with salt and pepper. Arrange onions in a single layer on prepared baking sheet and bake until browned at edges and just tender (about 40 minutes). Remove and cool to room temperature.
In a small bowl mix mayonnaise, basil, lemon juice, lemon peel and remaining oil (onions and mayonnaise can be made up to 2 days ahead, covered separately and refrigerated).
To assemble, spread mayonnaise on buns, top with beef, onions and lettuce.