Making these delectable Bourbon BBQ Bacon Cheeseburger Meatball Subs can be straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C).
2. Mix Meatball Ingredients: In a large bowl, combine ground beef, ground pork, breadcrumbs, Parmesan cheese, chopped onion, minced garlic, salt, pepper, smoked paprika, and the egg. Mix until well combined.
3. Form Meatballs: Shape the mixture into meatballs, about 1 inch in diameter. Place them on a baking sheet lined with parchment paper.
4. Bake Meatballs: Bake the meatballs for 20-25 minutes or until browned and cooked through.
5. Add BBQ Sauce: In the last few minutes of cooking, brush the bourbon BBQ sauce over the meatballs. Return to the oven for an additional 5 minutes.
6. Prepare Subs: While the meatballs finish cooking, slice the sub rolls open but not all the way through to create pockets.
7. Assemble Subs: Once meatballs are done, place 2-3 meatballs in each sub roll and drape with sliced cheddar cheese and crumbled bacon.
8. Melt Cheese: Return assembled subs to the oven for about 5 minutes, or until the cheese is melted.
9. Finish with Sauce: Remove from the oven and drizzle additional bourbon BBQ sauce over the top of the subs.
10. Serve: Serve warm with your favorite side dishes, such as fries or a salad.