I like to grill up a bunch of different vegetables over the weekend and then use them in various quick meals during the week. I almost always do onions, red and green peppers, zucchini, and eggplant, however with the portobello's I like to cook them up right before I assemble this, which I did inside on my grill pan.
For this burger roasting or grilling the vegetables will give you the same results.
I like to remove the gills on the mushrooms but you don't have to, then just a quick toss in olive oil, salt and pepper is all you have to do to prepare them.
Each component together gives you an amazing end result!
Toasted ciabatta bun
Grilled red pepper
The portobello, gill side up
A dollup of basil pesto
Fresh mozzarella
Grilled onion
Tomato
Garnish with a balsamic glaze over top
You could eat this with a bun top but it was so huge, I would suggest using a thinner bun.
The zucchini fries were made by tossing them in olive oil to coat then dipping them individually in a mixture of panko breadcrumbs and grated parmesan or romano cheese, salt and pepper.