Making Bourbon BBQ Bacon Cheeseburger Meatball Subs is straightforward. Follow these steps for delicious results:

1. Preheat the Oven: Start by preheating your oven to 400°F (200°C). This ensures your meatballs will cook evenly and thoroughly.

2. Prepare the Meatball Mixture: In a large mixing bowl, combine ground beef, ground pork, breadcrumbs, Parmesan cheese, egg, minced garlic, chopped parsley, salt, black pepper, and onion powder. Mix well until ingredients are evenly incorporated.

3. Form Meatballs: Shape the mixture into meatballs, about 1.5 inches in diameter. Place them on a baking sheet lined with parchment paper.

4. Bake the Meatballs: Bake the meatballs in the preheated oven for approximately 20 minutes, or until they are golden brown and cooked through.

5. Make Bourbon BBQ Sauce: While the meatballs are baking, combine barbecue sauce and bourbon in a small saucepan over low heat. Stir until well blended and heated through.

6. Add Bacon: Once the meatballs are done, remove them from the oven and place them in a large bowl. Pour the bourbon BBQ sauce over the meatballs and add the chopped bacon. Toss gently to coat.

7. Prepare the Sub Rolls: Slice the sub rolls in half and place them on a serving platter or individual plates.

8. Add Meatballs to Rolls: Place several meatballs inside each sub roll, ensuring a generous amount of sauce covers the meatballs.

9. Top with Cheese: Sprinkle a generous amount of shredded cheddar cheese over the meatballs in each sub.

10. Melt the Cheese: Optionally, return the assembled subs to the oven for 5 minutes, or until the cheese has melted.

11. Serve: Drizzle additional barbecue sauce over the subs, if desired, before serving.

With these easy-to-follow steps, you will have a plate of Bourbon BBQ Bacon Cheeseburger Meatball Subs ready for yourself and your guests to enjoy!