Heat olive oil over medium-high heat in 12-inch skillet.
Cook sausage for 5 to 7 minutes until browned. Add onions and celery and saute until softened. Add salt and pepper, to taste. Mix in apples, thyme and sage and saute for another 2 minutes. Add bourbon. Allow to simmer until bourbon is almost evaporated; 1 to 2 minutes.
In a large bowl, add cornbread stuffing, parsley, chicken stock, eggs and pecans. Mix well. Mix in vegetable mixture to bowl. Combine and stir well together. Add to a large casserole dish and bake for 30 minutes.