Preheat oven to 375.

Split peaches in half and remove stones.

Place peach halves in 9x13" dish.

Fill each with 1 teaspoon of brown sugar.

Cut butter into 1/2 tablespoon pats and place on top of each peach half.

In a small dish combine cinnamon and sugar and mix well.

Sprinkle each with cinnamon sugar mixture.

Bake for 30 minutes.