2                   baguettes
                    split, some of the soft insides removed
4     tablespoons   sherry vinegar
2                   rounded tablespoons spicy mustard
1     tablespoon    Worcestershire sauce
1/2   cup           extra-virgin olive oil
6                   garlic cloves
8                   portobello mushroom caps
                    wiped clean with damp cloth
                    Coarse salt
                    Coarsely-ground black pepper
1/4   cup           finely-chopped parsley
6     cups          deveined triple washed spinach
3/4   pound         manchego cheese
                    = (common Spanish sharp table cheese,
                    available in the specialty cheese case,
                    or sharp cheddar may be substituted)
4                   piquillo peppers, pimientos or
                    roasted red peppers
                    cut into strips