This grilled rosemary flank steak is a perfect summer grilling recipe. A quick and easy marinade of fresh rosemary, garlic, olive oil and balsamic vinegar results in a charred flavorful crust and tender, buttery interior. It's perfect for feeding a crowd for a party or backyard cookout, and leftovers are delicious served cold in a sandwich. Naturally Whole30, low carb, and gluten free. #steak #grilling #flanksteak #lowcarb #whole30