Ingredients

• 1 1/2 pounds beef sirloin steak, cut 1 inch thick, and/or skinless, boneless chicken breasts and/or thighs
  
• 1/2 cup barbecue sauce
  
• 14 cups water
  
• 2 -4 cloves garlic, minced
  
• 2 tablespoons dried minced onion
  
• 2 tablespoons sugar
  
• 2 tablespoons steak sauce
  
• 2 tablespoons vinegar
  
• 2 tablespoons Worcestershire sauce
  
• 2 tablespoons cooking oil
  
• 1/2 teaspoon salt
  
• 2 medium onions, each cut into 8 wedges
  
• 10 -12 medium mushrooms, stems removed
  
• 1 medium zucchini, halved and sliced 1/2 inch thick
  
• 1 large red or green sweet pepper, cut into 1-inch pieces