How to Make It
In a large glass baking dish, mix lemon juice, olive oil, garlic, salt, pepper, and 3 tablespoons of the cilantro. Add tenderloins; marinate at room temperature, turning frequently, for 30 minutes.
Toss together remaining tablespoon of cilantro, and lemon zest; set aside.
Heat broiler. Broil tenderloins on a broiler pan 5 to 6 inches from heat for 8 minutes, turn, and broil 5 to 7 minutes longer. they should be browned and cooked through; an instant-read thermometer should register 145º to 150º. Transfer to a cutting board, sprinkle with cilantro-lemon zest mixture; let stand 10 minues.
Reserve one tenderloin, let stand until at room temperature, and store covered and refigerated for up to three days.
Slice remaining tenderloin into 1/4-inch slices, and arrange on plates. Serve immediately.
How kids can help: Sprinkle cilantro-lemon zest mixture on tenderloin.