A few years ago, we discovered that mixing in a shredded apple greatly improves the texture of turkey burgers, which can often be a bit dry and crumbly. So I was intrigued by the recipe for Turkey & Spinach Burgers in our Big Green Egg Cookbook. I was even more intrigued by the inclusion of a tomato-based pesto.
Lazy blogger alert: I went to a bit of trouble to photograph the ingredients lists, rather than type them. The basic list is:
I started by lighting the grill, because that takes a while, and then I wilted the spinach. To do this, I rinsed it and then placed it in a large pan over medium-high heat on the stovetop. Stirring occasionally, the full pot of spinach was quickly reduced to something like a cupful. I used "regular" spinach; next time I will use baby spinach so that it is more leafy and lest stemmish.
I blended the mayo and mustard in a small serving bowl, as this is a topping for the table.
I then started the pesto. so that it would be ready before I began grilling.
I cooked the burgers on a cooking stone -- rather than directly on the grill, because I always end up with 1/3 of the burger stuck in the grill. The stone works great -- I just need to be sure it is quite hot when I am ready to put something on it. In this case, of course, it was the patties. I think I grilled them at 450-500 for about 8 minutes on one side, 4 on the other, then another minute or so with swiss cheese on top. I seem to have gotten the doneness right, which for me remains mostly a matter of luck.
I took set the burgers aside on a plate and then brushed the pesto onto each half of the wheat buns (I used large kaiser rolls -- highly recommended for this messy meal), set them on the grill, and closed the egg.
I then went inside to finish up my mac-and-cheese comfort-food side dish. This led to my only real error -- for buns directly on the grill, two minutes was much too much, and they were a bit charred by the time I retrieved them.
The end result, though: absolutely delicious turkey burgers with several vegetable groups well represented!
NOTE: The cookbook is essential for Big Green Egg owners who want to get the most interesting results from their grills; some of its best recipes can also be found on the recipe section of the manufacturer's web site.