In a large mixing bowl add the grated onion, garlic, marinara sauce, cheese, egg white, breadcrumbs, Italian seasoning and some salt and pepper and mix well to combine.
Then add in the ground chicken and mix to combine all the ingredients, but do not over mix.
Next take a handful of the ground chicken- roll it in your hand and then form patties of your size of choice- I got 3 patties but I made them a little bigger than usual.
Next on a grill pan coated with olive oil cook the patties about 5 minutes per side making sure you get a good brown crust on both sides- I cover the grill pan with a lid for the last few minutes to make sure burgers are cooked through and no longer pink so be sure and check to make sure they are done
Once burgers are almost done top with some mozzarella cheese just until it melts and you may have to cover them again to get the cheese to fully melt. I also grill my ciabatta bread rolls at this point, but you can use whatever bun you love.
Last, you just build your burger...I place a piece of lettuce on the bottom, then the patty and add your favorite marinara sauce to the top!