Preheat oven to 400 degrees F. Spray muffin pan with cooking spray.

Heat 1 tablespoon oil in a large saute pan over medium-high heat. Add sausage and saute until browned, about 4-5 minutes, stirring to crumble. Add onion, celery, and apples and saute another 5 minutes or until vegetables have softened. Add sage and season with salt and pepper. Remove from heat and let cool slightly.

In a large mixing bowl, mix flour with cornmeal, sugar, salt and baking powder. Whisk together egg, milk and vegetable oil in another bowl. Add egg mixture to flour mixture and stir until combined. Add sausage and vegetable mixture and stir to combine.

Spoon batter into muffin cups ¾ full. Top with chopped pecans and bake for 12 minutes or until lightly browned. Remove from oven and serve warm.