Greek Salad, The Best

1 cup olive oil

3 tablespoons red wine vinegar

3 tablespoons grated Parmesan cheese

2 tablespoons lemon juice

2 tablespoons finely chopped garlic

2 tablespoons dried oregano

or to taste

1 ½ teaspoons dried basil

1 teaspoon salt

or to taste

freshly ground black pepper to taste

2 heads romaine lettuce

chopped

2 large tomatoes

cut into wedges

1 large cucumber

cut into matchsticks

1 red onion

sliced

1 cup black olives

½ pound feta cheese

crumbled