1-First step: make the marinade Start by combining the marinade ingredients in a resealable plastic bag. Add the 3 tablespoons red wine vinegar, 2 tablespoons olive oil, 1 tablespoon unspecified ingredient, the four 1 teaspoon seasonings, and 0.5 teaspoon salt. Seal the bag and give it a gentle shake so everything blends well. This simple marinade is one of the easiest parts of Keto Kabob Recipes, and it helps the beef soak up flavor while it chills.

2-Second step: add the steak Place the 1.5 pounds of sirloin steak cubes into the bag with the marinade. Press out as much air as you can before sealing it shut. Turn the bag a few times so the beef gets coated on all sides. Then place it in the refrigerator for 4 to 12 hours. For the best flavor, marinate for about 6 hours, and turn the bag halfway through so the seasoning spreads evenly.

3-Third step: prep the vegetables and skewers While the beef marinates, cut the vegetables if needed. You will need 3 ounces red bell pepper, 3 ounces yellow bell pepper, 3 ounces green bell pepper, 8 small mushrooms, and 4 ounces red onion slices. Keep the pieces close in size so they cook at about the same rate. If you are using wooden skewers, soak them in water for at least 20 minutes to help prevent burning.

4-Fourth step: thread the kabobs Once the beef has finished marinating, remove it from the refrigerator and begin assembling the kabobs. Alternate the steak with the peppers, mushrooms, and onion on each skewer. This gives the kabobs a nice look and helps the flavors blend as they cook. Leave a little space between each piece so heat can move around the skewer and cook everything evenly.

5-Fifth step: cook on the grill For grilling, preheat the grill to medium-high heat. Oil the grates before adding the kabobs so they do not stick. Place the skewers on the hot grill and cook for 5 to 10 minutes, turning them occasionally. Baste with reserved marinade while they cook for extra flavor. Most cooks find that 4 to 5 minutes per side works well, especially for sirloin, which cooks quickly and can dry out if left too long.

6-Sixth step: cook under the broiler If you do not want to use the grill, the broiler works well too. Set the broiler to high and place the kabobs on a baking sheet. Put them close enough to the heat to brown nicely, then broil for 5 to 10 minutes per side. Turn the kabobs once and baste with reserved marinade as they cook. This method gives you a nice char without needing outdoor cooking gear, which is handy for apartments, cold weather, or busy nights.

7-Final step: rest and serve When the beef is cooked to your liking, move the kabobs to a plate and let them rest for a few minutes. Resting gives the juices time to settle back into the meat. Serve the kabobs hot with a simple side salad, cauliflower rice, or roasted vegetables for a full low carb meal.