Preheat oven to 350 degrees F.Place bacon on a baking sheet and bake bacon in oven for 15 minutes or until crispy then chop into small pieces.While bacon is cooking, cut apples in half then use a melon baller to hollow out each apple then set aside.Place a large saute pan over medium heat. Add ghee and minced garlic.Once garlic becomes fragrant, add onion and ground pork.Brown pork and break into small pieces, then add celery, salt, garlic powder, paprika, cayenne, black pepper, red wine vinegar, sage and chopped bacon. Mix well until combined.Scoop mixture into each apple half. Top each apple with about 1 teaspoon of ghee on top of the mixture.Place in a baking dish and bake for 40-45 minutes until apples are tender.