Prep the steak by cutting it into thin strips approximately 1-inch wide using a sharp knife on a cutting board. Set aside.
1 lb sirloin steak
Combine minced garlic, chopped rosemary, olive oil, salt, and pepper in a mixing bowl. Stir to create a marinade.
3 cloves garlic, 2 sprigs fresh rosemary, 2 tbsp olive oil, to taste salt and pepper
Add the steak strips to the marinade, tossing to coat evenly. Cover and let marinate at room temperature for 10 minutes until fragrant.
1 lb sirloin steak, 3 cloves garlic, 2 sprigs fresh rosemary, 2 tbsp olive oil, to taste salt and pepper
Preheat the grill to medium-high heat and clean the grates with a wire brush. Arrange the steak strips directly on the hot grill in a single layer, making sure they are spread out for even cooking.
Grill the steak strips for 2-3 minutes on each side, watching for a deep golden brown color and slight charring at the edges. Use tongs to turn the strips, ensuring an even cook.
Remove the steak strips from the grill once they reach your desired level of doneness and have visible grill marks and crispy edges. Arrange on a serving plate and serve immediately.