Line around inside of bowl with leaf lettuce. Chop remaining leaf lettuce and romaine lettuce and fill bowl with it.
Line spinach leaves in a circular fashion over top of lettuce.
Layer red onions in circular pattern around bowl. Follow with olives,cucumber slices, and roasted red pepper strips.
Put marinated mushrooms in center. Sprinkle artichoke hearts around mushrooms.
Place mozzarella slices in a circle around mushrooms and artichokes, and place a grape tomato between each of the cheese slices. Chop a few tomatoes in half and place around olives in center.
Garnish salad with fresh basil leaves and Parmesan cheese.
Olive Oil Vinaigrette
Whisk together all ingredients and serve on the side.
This isn't a recipe where exact measurements or placement will matter. You can put everything in your serving bowl in a way that pleases your eye. Depending on what size serving bowl you're using, you may or may not use up all the ingredients. In my case, I had leftover red peppers and baby spinach.