Preheat your oven to 350°F (175°C).
In a large bowl, gently combine all the meatloaf ingredients: ground meat, diced onion, egg, 2 ounces of BBQ sauce, dried minced garlic, garlic powder, paprika, onion powder, chili powder, salt, black pepper, cubed cheddar cheese, and 1/4 cup bacon crumbles. Mix thoroughly but avoid overworking the meat.
Divide this mixture evenly into 12 portions and press them into a standard-sized muffin tin. Bake for 30 minutes.
After 30 minutes, carefully take the muffin tin out of the oven. Drizzle the remaining 1 ounce of sugar-free BBQ sauce over each mini meatloaf. Then, sprinkle the 2 ounces of shredded cheddar cheese and the remaining 2 tablespoons of bacon crumbles on top of each.
Return the muffin tin to the oven and bake for another 10 minutes, or until an internal temperature of 160°F (71°C) is reached when checked with a meat thermometer.
Let them cool slightly before serving, perhaps with a side of extra BBQ sauce for dipping!