1. Heat small saucepan over medium heat. Chop apple into ½ inch pieces and transfer to saucepan, when hot. Add butter, sprinkle cinnamon and a pinch of salt over apples. Stir occasionally. Cook until butter melts and apples start to soften, about 3-5 minutes. Adjust cooking time to achieve desired apple texture.
2. While apples are cooking, spoon yogurt into bowl. Remove apples from heat and transfer to bowl with yogurt. Drizzle maple syrup or honey over apples if desired. Enjoy immediately.