1-First Step: Make the chimichurri sauce Start with the sauce so the flavors have time to blend. Add the olive oil, red wine vinegar, minced garlic, minced shallot, minced parsley, basil, thyme, oregano, cilantro, chopped jalapeño, sea salt, and cayenne pepper to a medium bowl. Stir everything together well until the herbs and oil look evenly mixed. Set the bowl at room temperature for 2 hours. This resting time helps the sauce mellow and gives the herbs a chance to infuse the oil and vinegar. If you want a sharper sauce, taste it before serving and add a little more cayenne. If you prefer less heat, keep the jalapeño and cayenne on the lighter side.

2-Second Step: Prepare the skewers If you are using wooden skewers, soak them in water for 1 hour before grilling. This helps reduce burning on the grill. While the skewers soak, cut the sirloin steak into 1 inch cubes if that is not already done. Pat the steak and shrimp dry with paper towels so they brown better on the grill. Thread the steak cubes and shrimp onto the skewers, alternating them if you like. Leave a little space between each piece so heat can move around the food. This step matters because crowded skewers can steam instead of sear.

3-Third Step: Season and oil the surf and turf Brush the assembled skewers with 1 tablespoon olive oil. Then season lightly with salt and pepper. You do not need much seasoning because the chimichurri adds plenty of flavor later. A thin coat of oil also helps prevent sticking and supports better grill marks. If you like, you can marinate the steak cubes ahead of time in olive oil, garlic, and herbs for extra flavor. This is optional, but it gives the beef even more depth and helps busy cooks save time on the day of grilling.

4-Fourth Step: Preheat the grill Preheat your grill to medium-high heat, about 425 degrees F. Give the grates a moment to heat fully before the skewers go on. A hot grill helps create a good sear and keeps the food from clinging to the grates. If you are cooking for a group, prepare any sides while the grill heats. Grilled vegetables, rice, or a simple salad all work well with this meal. For a complete meal plan, pair the skewers with a fresh side and a cool drink.

5-Fifth Step: Grill the skewers Place the skewers on the hot grill and cook for 8 to 10 minutes total, turning every 4 minutes. Watch the shrimp closely because shrimp cooks faster than steak. You want the shrimp to turn pink and opaque while the steak reaches your preferred doneness. For medium-rare steak, look for about 130 degrees F. For medium, aim for about 140 degrees F. If you prefer medium-well, go closer to 150 degrees F. Because grill heat can vary, start checking early so you do not overcook the shrimp.

6-Final Step: Finish with chimichurri and serve When the skewers are done, remove them from the grill and let them rest briefly. Then drizzle the chimichurri sauce over the top or serve it on the side for dipping. The fresh herbs and vinegar cut through the richness of the steak and shrimp in the best way. Serve the skewers hot with extra sauce nearby. This recipe works well for casual dinners, summer cookouts, or a fast weekend meal. Since the chimichurri has already rested, the flavors will be balanced and ready to use right away.