Ingredients for Spicy Bourbon BBQ Steak Kabobs

• 2 pounds sirloin steak cut in 1-inch cubes
• 1 red bell pepper seeded and cut in 1-inch pieces
• 1 orange bell pepper seeded and cut in 1-inch pieces
• 1 yellow bell pepper seeded and cut in 1-inch pieces
• 1 green bell pepper seeded and cut in 1-inch pieces
• 1 red onion cut in 1-inch pieces
• 4 tbsp brown sugar bourbon seasoning

BBQ Sauce ingredients:

• 1 cup whiskey
• 1 cup finely chopped onion
• 1/2 cup water
• 1/4 cup brown sugar
• 1 ½ cups ketchup
• 2 tbsp tomato paste
• 1 tbsp crushed red pepper
• 2 tbsp balsamic vinegar
• 4 tbsp molasses
• 1/8 cup Worcestershire sauce 
• ½ teaspoon liquid smoke