Preheat your oven to 375 degrees F.

Wash the apples and with a knife, core each apple starting at the stem, removing the center of the apple. This can also be done with an apple corer if you own one.

Place each apple in a 9x13 dish.

In a small bowl mix together 1/4 cup of the brown sugar, chopped walnuts, and cinnamon.

Place an equal amount of filling into each of the cored apples.

Divide the butter into 6 equal pieces and top each one of the apples.

In a small bowl whisk together the orange juice and the remaining brown sugar.

Pour into the bottom of the dish.

Add the apples to the preheated oven and bake for 50-60 minutes or until the apples are soft and the syrup has thickened.

Serve warm plain or topped with ice cream or whipped cream.