The Best Steak Kabobs

Ingredients

• 1 1/2 lb top sirloin steak (Australian Grass-fed. )
• 2 bell peppers
• 1 zucchini or summer squash
• 1 red onion
• avocado oil or spray
• salt & pepper to taste
• ½ cup soy sauce
• 4 garlic cloves, pressed
• 1 tsp onion powder
• 4 tbsp Worcestershire sauce
• 1 tbsp dijon mustard
• ½ cup Coca Cola
• 1 lemon, juiced
• ½ tsp salt
• ¼ tsp pepper