Prepare Cinnamon Butter; chill.
Grease a 9-inch pie plate. In mixing bowl, combine brown sugar, flour, baking powder, salt and cinnamon.
Add eggs and vanilla; stir till well mixed. Add apples and nuts; stir till well combined. Spoon into pie plate.
Bake in a 350°F oven for 30 to 35 minutes or till browned and top feels firm. Serve warm with Cinnamon Butter on top. Makes 8 servings.
In small mixing bowl, beat 1/4 cup butter with an electric mixer for 30 seconds. Add 1 cup sifted powdered sugar, 1/2 teaspoon ground cinnamon, 1 tablespoon milk and 1 teaspoon vanilla. Beat until combined. Cover and chill until firm. Makes 1/2 cup.