Place all the BBQ sauce ingredients into a small saucepan on medium heat. Cook for 20 minutes, stirring often. Cool and transfer to an airtight container in the fridge until needed.

Chop the steak into 1-inch cubes. Deseed the peppers, cut them, and the red onion into 1-inch pieces. Keep mushrooms whole, or if they are too large, halve or quarter as required.

Thread your meat onto the skewers alternating with pieces of bell peppers and onion. Top each end with a mushroom.

Place the kebabs into a dish and drizzle with oil. Sprinkle with Brown Sugar Bourbon Seasoning. Cover and refrigerate for 1 hour.

To cook, place kebab skewers on the barbecue grill - either coal or gas - and cook until the meat is browned and cooked to your liking. Depending on the heat of your barbecue, and how you like to eat your steak, the cooking time could be anywhere from 8 to 15 minutes. Turn the skewers often, and baste with the BBQ sauce during the cooking process. Serve immediately and enjoy!