1-First Step: Gather your mise en place. Cube the 1 pound top sirloin steak into 1-inch pieces. Cut 1 red bell pepper, 1 yellow bell pepper, and 1 red onion into 1-inch squares. Match sizes for even cooking. Pro tip: Uniform chunks prevent veggies from falling off.

2-Second Step: Make the marinade. Whisk 1/4 cup olive oil, 1/2 tablespoon lime juice, and 3 tablespoons fajita seasoning in a bowl. Simple, right? This mix soaks in fast for max flavor.

3-Third Step: Marinate the steak. Toss cubed steak into a zip-top bag with the marinade. Seal and fridge for 30 minutes. Don’t skip this; it tenderizes and seasons deep. Got time? Go 1 hour max.

4-Fourth Step: Preheat the grill to medium heat, about 350-400°F. Soak wooden skewers in water 30 minutes to avoid burning. Metal? Grab oven mitts, they get hot!

5-Fifth Step: Thread the skewers. Alternate red bell pepper, yellow bell pepper, red onion, and steak. Use 5 steak pieces per skewer; makes about 6 skewers. Leave small gaps for heat flow. Press gently so nothing slips.

6-Sixth Step: Grill time! Place on medium heat. Cook 6 minutes per side, total 12 minutes. Turn with tongs for char marks. Steak hits medium at 135-140°F internal. Pull off and rest 5 minutes.

7-Final Step: Serve hot right off skewers or tuck into grilled tortillas. Top with cilantro, sour cream, rice, or beans. Pairs great with fresh pineapple chunks. Leftovers? Think grilled steak quesadilla tomorrow.