Get your grill nice and hot over high heat.
In a small bowl, combine the coffee, brown sugar sweetener, black pepper, coriander, oregano, and sea salt. Give it a good mix – this is your flavorful rub!
Place your London broil on a clean cutting board. Drizzle 1/2 teaspoon of olive oil onto each side of the meat and rub it evenly all over. Then, generously sprinkle your homemade seasoning blend over the beef, massaging it in to ensure every bit is covered.
Pop the seasoned London broil onto the hot grill. Cook it for about 3-5 minutes per side for a perfect medium-rare, or until it reaches your preferred level of doneness.
Once cooked, transfer the meat to a plate and cover it loosely with foil for 5 minutes. This "tenting" helps keep it incredibly juicy. Finally, slice it thinly against the grain and at an angle for tender, easy-to-eat pieces. Enjoy your healthy, delicious meal!