Gorgonzola baked apples with balsamic

Ingredients:
1/3 cup chopped hazelnuts
1/4 cup butter, chopped
3 tablespoons crumbled Gorgonzola cheese
1 tablespoon brown sugar
1/4 teaspoon ground cinnamon
1/8 teaspoon salt
1/8 teaspoon onion powder
6 medium tart apples, cored
1 cup balsamic vinegar

Preparation:

In a small bowl, combine the first 7 ingredients.
Stuff apples with mixture and place in a greased 11x7-in. baking dish.
Bake, uncovered, at 325° for 40-45 minutes or until apples are tender.
Meanwhile, in a small saucepan, bring vinegar to a boil; cook until liquid is reduced to 1/3 cup.
Drizzle over apples.