Rinse rice and cook in rice cooker. In a saucepan, combine coconut milk and 1 1/4 cups of the brown sugar. Cook over medium heat, stirring constantly, until thickened, about 20 minutes. Preheat electric oven to 350 degrees. Put cooked rice into a large bowl. Stir remainder and remaining brown sugar evenly into the hot rice. Put into pan. Pour condensed milk on top and spread. Bake for 15 minutes, cut into small pieces.